Invalid provider_connection_token for Facebook Authentication in phpBB

I have a phpBB forum site up that uses OneAll for Facebook authentication. It works great from desktop, and was working in mobile before. Recently it stopped working for mobile and shows this error:
"Invalid provider_connection_token specified! This is an intermediate page that is not supposed to be opened directly."

This message happens on Android when trying to sign into the website forums, it redirects to the Facebook app before redirecting to OneAll and that's when it gets stuck. It never redirects back to my site or logs the user in.

Any help or suggestions would be greatly appreciated.

Answers

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