diff --git a/src/modules/blockchains/Buy/component4/Node/Node.tsx b/src/modules/blockchains/Buy/component4/Node/Node.tsx
index 97930f11f..4d0fcf53b 100644
--- a/src/modules/blockchains/Buy/component4/Node/Node.tsx
+++ b/src/modules/blockchains/Buy/component4/Node/Node.tsx
@@ -53,6 +53,7 @@ const Node = ({
           type="source"
           position={Position.Right}
           className={styles.handleDot}
+          isConnectable={false}
         />
       ))}
       {sourceHandles?.map((handle, index) => (
@@ -62,6 +63,7 @@ const Node = ({
           type="source"
           position={Position.Top}
           className={styles.handleDot}
+          isConnectable={false}
         />
       ))}
       {sourceHandles?.map((handle, index) => (
@@ -71,6 +73,7 @@ const Node = ({
           type="source"
           position={Position.Left}
           className={styles.handleDot}
+          isConnectable={false}
         />
       ))}
       {sourceHandles?.map((handle, index) => (
@@ -79,6 +82,7 @@ const Node = ({
           id={handle}
           type="source"
           position={Position.Bottom}
+          isConnectable={false}
           className={styles.handleDot}
         />
       ))}
diff --git a/src/modules/blockchains/Buy/component4/Node_v2/Node.tsx b/src/modules/blockchains/Buy/component4/Node_v2/Node.tsx
index 2a04521dc..15c4fcf04 100644
--- a/src/modules/blockchains/Buy/component4/Node_v2/Node.tsx
+++ b/src/modules/blockchains/Buy/component4/Node_v2/Node.tsx
@@ -51,6 +51,7 @@ const Node = ({
           type="source"
           position={Position.Right}
           className={styles.handleDot}
+          isConnectable={false}
         />
       ))}
       {sourceHandles?.map((handle, index) => (
@@ -60,6 +61,7 @@ const Node = ({
           type="source"
           position={Position.Top}
           className={styles.handleDot}
+          isConnectable={false}
         />
       ))}
       {sourceHandles?.map((handle, index) => (
@@ -69,6 +71,7 @@ const Node = ({
           type="source"
           position={Position.Left}
           className={styles.handleDot}
+          isConnectable={false}
         />
       ))}
       {sourceHandles?.map((handle, index) => (
@@ -78,6 +81,7 @@ const Node = ({
           type="source"
           position={Position.Bottom}
           className={styles.handleDot}
+          isConnectable={false}
         />
       ))}
     </div>
diff --git a/src/modules/blockchains/Buy/studio/Controls/index.tsx b/src/modules/blockchains/Buy/studio/Controls/index.tsx
index 7220ed5b5..a7546c2ec 100644
--- a/src/modules/blockchains/Buy/studio/Controls/index.tsx
+++ b/src/modules/blockchains/Buy/studio/Controls/index.tsx
@@ -134,6 +134,7 @@ export default memo(function StudioControls() {
               id={item.key}
               isRequired={item.required}
               active={field[item.key].dragged}
+              needCheckIcon={item.required}
               description={{
                 title: item.title,
                 content: item.tooltip,