diff --git a/README.md b/README.md
index 03dff22..2a446da 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,8 @@ TokensValidation is a PHP library designed to generate and verify authentication
 
 ## Installation
 
+> ⚠️ **WARNING**: This version is compatible with PHP 7.1. If you are using PHP 8, it is recommended to use the [latest version](https://github.com/HichemTab-tech/tokens-validation) of this library.
+
 The TokensValidation library can be installed via Composer by running the following command:
 
 ```bash
@@ -89,14 +91,17 @@ The First example is an Auto generating and verifying:
 - To generate an authentication token using cookies, call the following method:
 ```PHP
 $authToken = TokensValidation::createNewAuthToken(
-        userId: $uid,
-        usingCookies: true
+        $uid,
+        "",
+        true
     );
 
 // you can print $authToken for additional informations about the created token.
 ```
 This method generates a new authentication token for the given user ID and saves it in a cookie. The second argument specifies whether to use cookies or not.
 
+> ⚠️ It's **highly recommended** to use the [latest version](https://github.com/HichemTab-tech/tokens-validation) of the library which is compatible with **PHP 8.0** and above.
+
 To check the authentication token, call the following method:
 ```PHP
 $result = TokensValidation::checkAuthToken();
@@ -130,8 +135,9 @@ To generate an authentication token and handle it yourself, call the following m
 
 ```PHP
 $authToken = TokensValidation::createNewAuthToken(
-        userId: $uid,
-        usingCookies: false
+        $uid,
+        "",
+        false
     );
 
     echo $authToken->getUserId();
@@ -195,14 +201,14 @@ You can add an extra layer of security to authentication tokens by using a brows
 
 ```PHP
 $authToken = TokensValidation::createNewAuthToken(
-        userId: $uid,
-        fingerPrint: $somefingerprint
+        $uid,
+        $somefingerprint
     );
 ```
 To check the authentication token with a fingerprint, call the **checkAuthToken()** method with the fingerprint argument.
 
 ```PHP
-$result = TokensValidation::checkAuthToken(authToken: $authToken, fingerPrint: $somefingerprint);
+$result = TokensValidation::checkAuthToken($somefingerprint, $authToken);
 ```
 
 - *to generate the fingerprint, you can use for example https://github.com/Valve/fingerprintjs2*
@@ -220,8 +226,8 @@ In this case, the library generates a lengthy token that includes an encrypted u
 
 ```PHP
 $confirmationToken = TokensValidation::createNewConfirmationToken(
-        userId: $uid,
-        confirmationType: ConfirmationsTokenTypes::IN_URL
+        $uid,
+        ConfirmationsTokenTypes::IN_URL
     );
 
     echo $confirmationToken->getContent();// if you want to view the long confirmation token
@@ -234,7 +240,7 @@ $confirmationToken = TokensValidation::createNewConfirmationToken(
 You can utilize these lines of code to verify the contents of a URL.
 
 ```PHP
-$result = TokensValidation::checkConfirmationUrl(url: $url);
+$result = TokensValidation::checkConfirmationUrl($url);
     if ($result->isValidationSucceed()) {
         //for example :
         echo $result->getUserId();
@@ -248,7 +254,7 @@ $result = TokensValidation::checkConfirmationUrl(url: $url);
 Or you can inject **$_GET** directly:
 
 ```PHP
-$result = TokensValidation::checkConfirmationUrlParamsFromGET(_GET_ARRAY: $_GET);
+$result = TokensValidation::checkConfirmationUrlParamsFromGET($_GET);
 ```
 
 To override the ConfirmationUrl builder methods, create a class that extends the **ConfirmationUrlBuilder** class and implements the **getUrl(ConfirmationToken $confirmationToken, string $baseUrl)**, **getUserIdAndTokenFromUrl(string $url)**, and **getUserIdAndTokenFromGET(array $_GET_ARRAY)** methods. Then, set the $ConfirmationUrlBuilder property to the name of your new class. Here's an example:
@@ -297,14 +303,14 @@ In this case, the user needs to enter the confirmation token generated by the li
 
 ```PHP
 $confirmationToken = TokensValidation::createNewConfirmationToken(
-        userId: $uid,
-        confirmationType: ConfirmationsTokenTypes::SMALL_CODE
+        $uid,
+        ConfirmationsTokenTypes::SMALL_CODE
     );
 
     echo $confirmationToken->getContent();
 
 
-    $result = TokensValidation::checkConfirmationCode(code: $token);
+    $result = TokensValidation::checkConfirmationCode($token);
     if ($result->isValidationSucceed()) {
         //for example :
         echo $result->getUserId();
@@ -320,16 +326,16 @@ To ensure that each confirmation code is used for its intended purpose, you can
 
 ```PHP
 $confirmationToken = TokensValidation::createNewConfirmationToken(
-        userId: $uid,
-        confirmationType: ConfirmationsTokenTypes::SMALL_CODE,
-        whatFor: "email-confirmation"
+        $uid,
+        ConfirmationsTokenTypes::SMALL_CODE,
+        "email-confirmation"
     );
 ```
 
 
 To check it :
 ```PHP
-$result = TokensValidation::checkConfirmationCode(code: $token, whatFor: "email-confirmation");
+$result = TokensValidation::checkConfirmationCode($token, null, "email-confirmation");
 ```
 
 If the "whatFor" parameter does not match the intended purpose of the confirmation code, the validation process will fail.
@@ -340,10 +346,10 @@ you want just to check the token if its valid, then check it later in another po
 This parameter allows you to specify whether the token will be deleted after the validation succeeded or not.
 
 ```PHP
-$confirmationToken = TokensValidation::createNewConfirmationToken(
-        userId: $uid,
-        confirmationType: ConfirmationsTokenTypes::SMALL_CODE,
-        whatFor: "email-confirmation",
+$confirmationToken = TokensValidation::checkConfirmationCode(
+        $uid,
+        ConfirmationsTokenTypes::SMALL_CODE,
+        "email-confirmation",
         deleteAfterCheck: false, //true by default
     );
 ```
@@ -357,10 +363,11 @@ the library returns the existed token only with different expiration date.
 
 ```PHP
 $confirmationToken = TokensValidation::createNewConfirmationToken(
-        userId: $uid,
-        confirmationType: ConfirmationsTokenTypes::SMALL_CODE,
-        whatFor: "email-confirmation",
-        singleTokenPerTime: true
+        $uid,
+        ConfirmationsTokenTypes::SMALL_CODE,
+        "email-confirmation",
+        -1,
+        true
     );
 ```
 
@@ -391,8 +398,10 @@ TokensValidation::setConfirmationTokenExpirationDelay(60 * 60);  // seconds
 You have the option to provide a custom expiration delay by passing the "expirationDelay" parameter to the function which generates the token for either the confirmation token or authentication token. You can accomplish this by using the following code:
 ```PHP
 $confirmationToken = TokensValidation::createNewConfirmationToken(
-        userId: $uid,
-        expirationDelay: 60*60  // seconds
+        $uid,
+        ConfirmationsTokenTypes::SMALL_CODE,
+        "default",
+        60*60  // seconds
     );
 ```
 
@@ -436,9 +445,10 @@ you can create an invitation by calling this code:
 
 ```PHP
 $invitation = TokensValidation::createInvitation(
-        userId: $uid,
-        target_email: "user@example.com",
-        whatFor: "become-admin",
+        $uid,
+        "user@example.com",
+        -1,
+        "become-admin",
     );
 
 echo $invitation->getUrl();
@@ -463,8 +473,8 @@ Typically, when using the invitation feature for actions such as sign up, the us
 <?php
 
 $invitation = TokensValidation::checkInvitationToken(
-    token: $_GET['token'],
-    whatFor: "administration",
+    $_GET['token'],
+    "administration",
 );
 
 if (!$invitation->isValidationSucceed()) {
@@ -492,9 +502,9 @@ After the user inputs the required information and submits the form, the token n
 ...
 
 $invitation = TokensValidation::checkInvitationToken(
-    token: $_GET['token'],
-    whatFor: "administration",
-    thenAccept: true
+    $_GET['token'],
+    "administration",
+    true
 );
 
 if (!$invitation->isValidationSucceed()) {