diff --git a/.k8s/manifest-dallas.yml b/.k8s/manifest-dallas.yml
index 3ff98c2..8b88008 100644
--- a/.k8s/manifest-dallas.yml
+++ b/.k8s/manifest-dallas.yml
@@ -89,7 +89,7 @@ metadata:
     konghq.com/protocols: "https"
     konghq.com/https-redirect-status-code: "301"
     kubernetes.io/tls-acme: "true"
-    cert-manager.io/cluster-issuer: letsencrypt-prod
+    cert-manager.io/cluster-issuer: zerossl-prod
     kubernetes.io/ingress.class: kong
 spec:
   tls:
diff --git a/.k8s/manifest-frankfurt.yml b/.k8s/manifest-frankfurt.yml
deleted file mode 100644
index 3ff98c2..0000000
--- a/.k8s/manifest-frankfurt.yml
+++ /dev/null
@@ -1,167 +0,0 @@
-# Deployment
----
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: alquran-cloud-app
-  namespace: alquran-cloud
-spec:
-  replicas: 2
-  strategy:
-    type: RollingUpdate
-    rollingUpdate:
-      maxSurge: 1
-      maxUnavailable: 0
-  selector:
-    matchLabels:
-      app: alquran-cloud-app
-  template:
-    metadata:
-      labels:
-        app: alquran-cloud-app
-    spec:
-      containers:
-      - name: apache-exporter-sidecar
-        image: lusotycoon/apache-exporter
-        resources:
-          requests:
-            cpu: "20m"
-            memory: 16Mi
-          limits:
-            cpu: "100"
-            memory: 128Mi
-        args:
-          - '--scrape_uri=http://localhost:8080/server-status?auto'
-        ports:
-          - containerPort: 9117
-            protocol: TCP
-      - name: alquran-cloud-app
-        image: islamicnetwork/alquran.cloud:$COMMIT_TAG
-        env:
-          - name:  API_BASE_URI
-            value: http://alquran-cloud-api/
-        livenessProbe:
-          httpGet:
-            path: /liveness
-            port: 8080
-          initialDelaySeconds: 7
-          periodSeconds: 30
-          timeoutSeconds: 5
-          failureThreshold: 3
-        startupProbe:
-          httpGet:
-            path: /liveness
-            port: 8080
-          periodSeconds: 7
-          failureThreshold: 3
-        resources:
-          requests:
-            cpu: "100m"
-            memory: 180Mi
-          limits:
-            cpu: "200m"
-            memory: 380Mi
-        ports:
-        - containerPort: 8080
-          protocol: TCP
----
-# HPA
-apiVersion: autoscaling/v1
-kind: HorizontalPodAutoscaler
-metadata:
-  name: alquran-cloud-app
-  namespace: alquran-cloud
-spec:
-  scaleTargetRef:
-    apiVersion: apps/v1
-    kind: Deployment
-    name: alquran-cloud-app
-  minReplicas: 2
-  maxReplicas: 5
-  targetCPUUtilizationPercentage: 60
----
-apiVersion: networking.k8s.io/v1
-kind: Ingress
-metadata:
-  name: alquran-cloud-ingress
-  namespace: alquran-cloud
-  annotations:
-    konghq.com/protocols: "https"
-    konghq.com/https-redirect-status-code: "301"
-    kubernetes.io/tls-acme: "true"
-    cert-manager.io/cluster-issuer: letsencrypt-prod
-    kubernetes.io/ingress.class: kong
-spec:
-  tls:
-  - hosts:
-    - alquran.cloud
-    - "www.alquran.cloud"
-    secretName: "alquran-cloud-app-tls"
-  rules:
-  - host: alquran.cloud
-    http:
-      paths:
-      - path: /
-        pathType: Prefix
-        backend:
-          service:
-            name: alquran-cloud-app
-            port: 
-              number: 80
-  - host: www.alquran.cloud
-    http:
-      paths:
-      - path: /
-        pathType: Prefix
-        backend:
-          service:
-            name: alquran-cloud-app
-            port: 
-              number: 80
----
-apiVersion: monitoring.coreos.com/v1
-kind: ServiceMonitor
-metadata:
-  name: alquran-cloud-app-metrics
-  namespace: monitoring
-  labels:
-    release: lke-monitor
-spec:
-  selector:
-    matchLabels:
-      name: alquran-cloud-app-metrics
-  namespaceSelector:
-    any: true
-  endpoints:
-    - port: "metrics"
-      interval: 30s
----
-#  Service
-apiVersion: v1
-kind: Service
-metadata:
-  name: alquran-cloud-app
-  namespace: alquran-cloud
-spec:
-  ports:
-  - port: 80
-    targetPort: 8080
-  selector:
-    app: alquran-cloud-app
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: alquran-cloud-app-metrics
-  namespace: alquran-cloud
-  labels:
-    name: alquran-cloud-app-metrics
-spec:
-  type: ClusterIP
-  selector:
-    app: alquran-cloud-app
-  ports:
-    - name: metrics
-      port: 9117
-      targetPort: 9117
-
diff --git a/.k8s/manifest-london.yml b/.k8s/manifest-london.yml
index 3ff98c2..8b88008 100644
--- a/.k8s/manifest-london.yml
+++ b/.k8s/manifest-london.yml
@@ -89,7 +89,7 @@ metadata:
     konghq.com/protocols: "https"
     konghq.com/https-redirect-status-code: "301"
     kubernetes.io/tls-acme: "true"
-    cert-manager.io/cluster-issuer: letsencrypt-prod
+    cert-manager.io/cluster-issuer: zerossl-prod
     kubernetes.io/ingress.class: kong
 spec:
   tls:
diff --git a/.k8s/manifest-mumbai.yml b/.k8s/manifest-mumbai.yml
deleted file mode 100644
index 3ff98c2..0000000
--- a/.k8s/manifest-mumbai.yml
+++ /dev/null
@@ -1,167 +0,0 @@
-# Deployment
----
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: alquran-cloud-app
-  namespace: alquran-cloud
-spec:
-  replicas: 2
-  strategy:
-    type: RollingUpdate
-    rollingUpdate:
-      maxSurge: 1
-      maxUnavailable: 0
-  selector:
-    matchLabels:
-      app: alquran-cloud-app
-  template:
-    metadata:
-      labels:
-        app: alquran-cloud-app
-    spec:
-      containers:
-      - name: apache-exporter-sidecar
-        image: lusotycoon/apache-exporter
-        resources:
-          requests:
-            cpu: "20m"
-            memory: 16Mi
-          limits:
-            cpu: "100"
-            memory: 128Mi
-        args:
-          - '--scrape_uri=http://localhost:8080/server-status?auto'
-        ports:
-          - containerPort: 9117
-            protocol: TCP
-      - name: alquran-cloud-app
-        image: islamicnetwork/alquran.cloud:$COMMIT_TAG
-        env:
-          - name:  API_BASE_URI
-            value: http://alquran-cloud-api/
-        livenessProbe:
-          httpGet:
-            path: /liveness
-            port: 8080
-          initialDelaySeconds: 7
-          periodSeconds: 30
-          timeoutSeconds: 5
-          failureThreshold: 3
-        startupProbe:
-          httpGet:
-            path: /liveness
-            port: 8080
-          periodSeconds: 7
-          failureThreshold: 3
-        resources:
-          requests:
-            cpu: "100m"
-            memory: 180Mi
-          limits:
-            cpu: "200m"
-            memory: 380Mi
-        ports:
-        - containerPort: 8080
-          protocol: TCP
----
-# HPA
-apiVersion: autoscaling/v1
-kind: HorizontalPodAutoscaler
-metadata:
-  name: alquran-cloud-app
-  namespace: alquran-cloud
-spec:
-  scaleTargetRef:
-    apiVersion: apps/v1
-    kind: Deployment
-    name: alquran-cloud-app
-  minReplicas: 2
-  maxReplicas: 5
-  targetCPUUtilizationPercentage: 60
----
-apiVersion: networking.k8s.io/v1
-kind: Ingress
-metadata:
-  name: alquran-cloud-ingress
-  namespace: alquran-cloud
-  annotations:
-    konghq.com/protocols: "https"
-    konghq.com/https-redirect-status-code: "301"
-    kubernetes.io/tls-acme: "true"
-    cert-manager.io/cluster-issuer: letsencrypt-prod
-    kubernetes.io/ingress.class: kong
-spec:
-  tls:
-  - hosts:
-    - alquran.cloud
-    - "www.alquran.cloud"
-    secretName: "alquran-cloud-app-tls"
-  rules:
-  - host: alquran.cloud
-    http:
-      paths:
-      - path: /
-        pathType: Prefix
-        backend:
-          service:
-            name: alquran-cloud-app
-            port: 
-              number: 80
-  - host: www.alquran.cloud
-    http:
-      paths:
-      - path: /
-        pathType: Prefix
-        backend:
-          service:
-            name: alquran-cloud-app
-            port: 
-              number: 80
----
-apiVersion: monitoring.coreos.com/v1
-kind: ServiceMonitor
-metadata:
-  name: alquran-cloud-app-metrics
-  namespace: monitoring
-  labels:
-    release: lke-monitor
-spec:
-  selector:
-    matchLabels:
-      name: alquran-cloud-app-metrics
-  namespaceSelector:
-    any: true
-  endpoints:
-    - port: "metrics"
-      interval: 30s
----
-#  Service
-apiVersion: v1
-kind: Service
-metadata:
-  name: alquran-cloud-app
-  namespace: alquran-cloud
-spec:
-  ports:
-  - port: 80
-    targetPort: 8080
-  selector:
-    app: alquran-cloud-app
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: alquran-cloud-app-metrics
-  namespace: alquran-cloud
-  labels:
-    name: alquran-cloud-app-metrics
-spec:
-  type: ClusterIP
-  selector:
-    app: alquran-cloud-app
-  ports:
-    - name: metrics
-      port: 9117
-      targetPort: 9117
-
diff --git a/.k8s/manifest-newark.yml b/.k8s/manifest-newark.yml
deleted file mode 100644
index 3ff98c2..0000000
--- a/.k8s/manifest-newark.yml
+++ /dev/null
@@ -1,167 +0,0 @@
-# Deployment
----
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: alquran-cloud-app
-  namespace: alquran-cloud
-spec:
-  replicas: 2
-  strategy:
-    type: RollingUpdate
-    rollingUpdate:
-      maxSurge: 1
-      maxUnavailable: 0
-  selector:
-    matchLabels:
-      app: alquran-cloud-app
-  template:
-    metadata:
-      labels:
-        app: alquran-cloud-app
-    spec:
-      containers:
-      - name: apache-exporter-sidecar
-        image: lusotycoon/apache-exporter
-        resources:
-          requests:
-            cpu: "20m"
-            memory: 16Mi
-          limits:
-            cpu: "100"
-            memory: 128Mi
-        args:
-          - '--scrape_uri=http://localhost:8080/server-status?auto'
-        ports:
-          - containerPort: 9117
-            protocol: TCP
-      - name: alquran-cloud-app
-        image: islamicnetwork/alquran.cloud:$COMMIT_TAG
-        env:
-          - name:  API_BASE_URI
-            value: http://alquran-cloud-api/
-        livenessProbe:
-          httpGet:
-            path: /liveness
-            port: 8080
-          initialDelaySeconds: 7
-          periodSeconds: 30
-          timeoutSeconds: 5
-          failureThreshold: 3
-        startupProbe:
-          httpGet:
-            path: /liveness
-            port: 8080
-          periodSeconds: 7
-          failureThreshold: 3
-        resources:
-          requests:
-            cpu: "100m"
-            memory: 180Mi
-          limits:
-            cpu: "200m"
-            memory: 380Mi
-        ports:
-        - containerPort: 8080
-          protocol: TCP
----
-# HPA
-apiVersion: autoscaling/v1
-kind: HorizontalPodAutoscaler
-metadata:
-  name: alquran-cloud-app
-  namespace: alquran-cloud
-spec:
-  scaleTargetRef:
-    apiVersion: apps/v1
-    kind: Deployment
-    name: alquran-cloud-app
-  minReplicas: 2
-  maxReplicas: 5
-  targetCPUUtilizationPercentage: 60
----
-apiVersion: networking.k8s.io/v1
-kind: Ingress
-metadata:
-  name: alquran-cloud-ingress
-  namespace: alquran-cloud
-  annotations:
-    konghq.com/protocols: "https"
-    konghq.com/https-redirect-status-code: "301"
-    kubernetes.io/tls-acme: "true"
-    cert-manager.io/cluster-issuer: letsencrypt-prod
-    kubernetes.io/ingress.class: kong
-spec:
-  tls:
-  - hosts:
-    - alquran.cloud
-    - "www.alquran.cloud"
-    secretName: "alquran-cloud-app-tls"
-  rules:
-  - host: alquran.cloud
-    http:
-      paths:
-      - path: /
-        pathType: Prefix
-        backend:
-          service:
-            name: alquran-cloud-app
-            port: 
-              number: 80
-  - host: www.alquran.cloud
-    http:
-      paths:
-      - path: /
-        pathType: Prefix
-        backend:
-          service:
-            name: alquran-cloud-app
-            port: 
-              number: 80
----
-apiVersion: monitoring.coreos.com/v1
-kind: ServiceMonitor
-metadata:
-  name: alquran-cloud-app-metrics
-  namespace: monitoring
-  labels:
-    release: lke-monitor
-spec:
-  selector:
-    matchLabels:
-      name: alquran-cloud-app-metrics
-  namespaceSelector:
-    any: true
-  endpoints:
-    - port: "metrics"
-      interval: 30s
----
-#  Service
-apiVersion: v1
-kind: Service
-metadata:
-  name: alquran-cloud-app
-  namespace: alquran-cloud
-spec:
-  ports:
-  - port: 80
-    targetPort: 8080
-  selector:
-    app: alquran-cloud-app
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: alquran-cloud-app-metrics
-  namespace: alquran-cloud
-  labels:
-    name: alquran-cloud-app-metrics
-spec:
-  type: ClusterIP
-  selector:
-    app: alquran-cloud-app
-  ports:
-    - name: metrics
-      port: 9117
-      targetPort: 9117
-
diff --git a/.k8s/manifest-singapore.yml b/.k8s/manifest-singapore.yml
index 3ff98c2..8b88008 100644
--- a/.k8s/manifest-singapore.yml
+++ b/.k8s/manifest-singapore.yml
@@ -89,7 +89,7 @@ metadata:
     konghq.com/protocols: "https"
     konghq.com/https-redirect-status-code: "301"
     kubernetes.io/tls-acme: "true"
-    cert-manager.io/cluster-issuer: letsencrypt-prod
+    cert-manager.io/cluster-issuer: zerossl-prod
     kubernetes.io/ingress.class: kong
 spec:
   tls: