Also something weird happend on my mobile and my desktop - besides very slow loading times which often required reloading the page, because I got stuck on the login screen - when I succesfully managed to login, the forum would basically show up looking like the last time I logged in. Complete with new post notifications and the newest post being 15h old. Reloading didn’t do anything, the whole forum was stuck in a 15hrs old state.
I had the same issue too until ~20 minutes ago. Works now.