I have spoken to the guys behind OpenXBL and they have give me permission for this*
OpenXBL For XF2.1
What started as a project getting it working for my site grew to accomodate all those looking for an Xbox Leaderboard.
I still run XF2.1 hence why it was made to work with that. With help...
So there's no active working Xbox Leaderboard, however the cloest is from TACTICS using XBL.IO.
I actually found a beta release on the discord server (only alpha listed on here) but he closed channel down to reply in as no longer supported.
From a forum stand point it works fine, as...
When I visit https://www.philcanavan.co.uk/connected_account.php directly it gives me error: An unexpected error occurred. Please try again later.
However if I visit other forums whether 2.1 or 2.2 such as here it says: There is no valid connected account request available. Please try again...