Are dungeons broke or something? Whenever I try to enter, it just doesn't load the rooms and I have to leave in the end. Is there any way to bypass this glitch, like playing dungeons in multiplayer, or is there no way to do dungeons anymore?

Not sure about that one. I'm currently in the middle of verifying a tier 1 dungeon run, so I think it's still possible, but I'll test it myself. Btw if its broken there's really nothing I can do about it; I'm not Vetex.

Dungeons work fine for me :/

its like a 50/50 if dungeons work, solos are most likely to function