Recommendations to Resolve the Issue Ensure Unique Token Submission: Make sure that the reCAPTCHA token is only submitted once per form submission. You can do this by disabling the submit button after the first submission or by using JavaScript to prevent multiple submissions.

Check for Errors Before Validation: Before checking the score, ensure that the response is valid and that there are no errors. You can add a check for the presence of error-codes in the response.

Debugging: Add more debugging information to understand the flow of your application better. For example, log the response before the if statement to see if the response changes unexpectedly.

Use a Fresh Token: If you suspect that the token is being reused, consider generating a new reCAPTCHA token for each form submission.