I have setup WHMCS on https://techimpossible.net/clients/

I have setup WHMCS on https://techimpossible.net/clients/ and has been working fine, until now.

The WHMCS integration and provisioning still works but users get the following error message when checking out.

Sorry this doesn't look like a WHMCS site at [https://techimpossible.net/clients/] Make sure your WHMCS Integration settings are pointing to the correct URL and that the WHMCS site is set for the Portal template in setup | General.

The email and the WP site setup still goes on in the background, but it is annoying to keep getting this message.

Thanks

Peter