Problem #

You see the following error while attempting to authenticate with WHMCS using Twitter™ Sign-In Integrations:

We were unable to connect your account. Please contact your system administrator

Cause #

There is a misconfiguration in the callback URL in your Twitter app settings or your Twitter account does not have access to Twitter API v1.1.

Solution #

Make certain that you have configured the callback URLs correctly. If the issue does not resolve, request Elevated access from Twitter.

Last modified: 2025 April 2