I've always used this bookmark:
https://www.boincstats.com/stats/-1/user/detail/6470/projectList
It now says "User ID doesn't exist in BOINC combined or doesn't have any credit."

I check in my account and find my user ID is actually 7915? So I edit the URL to this:
https://www.boincstats.com/stats/-1/user/detail/7915/projectList
Still "User ID doesn't exist in BOINC combined or doesn't have any credit."

Found a link when logged in that says https://www.boincstats.com/stats/-1/user/detail/53ed9d9b7d568cb7eb1ccc25a7dc4492
Still the same error message.

But I can get to other people's stats ok.

If I click on your name on the left, it takes me to your stats page and can see your totals, detail project stats etc.
link > https://www.boincstats.com/stats/-1/user/detail/53ed9d9b7d568cb7eb1ccc25a7dc4492

Seems to be working now, I must have looked just as it was doing a daily update. I wonder why I have two BAM IDs, the one on the left (7915) still doesn't work, but my other one (6470) does.