The site is functioning and it can take up to 24 hours for statistics to update for paid members. The system should be in the process of updating in the next few hours.
First, check to see if you have authenticated (signed-in). Then, try a Shift + Reload the page from this link https://project-gc.com/Statistics/ProfileStats
. If nothing changes, wait for a few more hours and try the Shift + Reload again.