Tags picked when signing up are gone after logging back in.

I sign up through Github with my email That's also my Gmail., and then spend 1015 minutes selecting the tags that I'm interested in. So when I come back, I have something interesting to look at. And when I come back in, they're all gone. Zero, And says, I gotta pick them all again. if this happens again, what a worthless sight. I'm not. gonna be dumb and invest time in. trying to tailor my experience, how they want me to, so I can come back here often. If it's just gonna disappear next time. like, what the