cloud.gnome.org: login throttling ("up to 30s") seems to exceed cgi timeout, causing 504 bad gateway instead of "login failed"
While trying to log into my cloud.gnome.org account, I triggered Nextcloud's "your logins are throttled up to 30s" warning.
Trying to log in after the warning would some times take a long time (I was never able to log in anyway, see below), probably 30s or more, and apparently run into the cgi timeout because I started getting 504 errors instead of the login-failed page again.
Side-note: This is also a low-key "I think I locked myself out of cloud.gnome.org" report (help!)
diegoe in the account system.