Since some days, the signature banner I'm using for my team no longer works and only shows the message "Your BAM!-id is not linked to a stats account yet!".
I'm talking about the setting in BAM! -> Signature -> Banner style signature for Team. Below is the link for my team sig.

https://www.boincstats.com/signature/-1/bam/18375/sig.png

This has worked previously for me for many, many years with no issues. Since about a week, it no longer works. A bug somewhere?

I'm a new user and seeing this as well. If I search for my username, I can see my stats, but the signature shows the same thing as you.

I've also noticed if I go to "My detailed stats" under the BAM! menu, I get this error "User ID doesn't exist in BOINC combined without ASIC or doesn't have any credit" even though when I search my username at the top, I see two results - one with ASIC and one without.

Yup, I'm also getting this. No user-id found. In addition, my CPID in my account settings isn't showing either. I can't even view my stats!

I just logged in for the first time in a few days and looks like its working for me now. I also noticed if I search for my username in the top left, there is a little profile icon in the results options which wasn't there prior.

Ping? Bump?