Kasts - Keyring keeps popping up

I installed Kasts from Flathub, and that I keep getting that “default keyring password” prompt, and it doesn’t recognize my password whatsoever. I can press cancel but it pops up every startup.

At work, I thought it was because of my recent password change (account is synced via AD/Okta). But at home, I didn’t even change my password at all.

Any idea what’s up with that?