To print at my university, we have to use Pharos’ Pharos Print app. I got an error about the print server version being incompatible. Searching it led me to people discussing a problem with the printers not being set up with Apple trusted SSL certificates, but this didn’t make a ton of sense to me (given that my friends with Apple devices weren’t having issues).

On my phone, turning Private Relay (aka my VPN) off did the trick. Unfortunately, even with my VPN off on my iPad, I couldn’t get it to work. Hopefully this can be useful to someone! Email me if you have more to add.