Can't add Arcane Tradition but have requirements for more options?

Hi, I was editing a character and wanted to change the Arcane Tradition I had given them. This character is part of a campaign and I have access to shared content via my DM, before, that was enough to be able to access a variety of content/Arcane Traditions/Schools that my DM owned. But after I removed the one I had there is only the School of Evocation left (and one Homebrew option). Previously, when first setting up the character, I had a way longer list. In addition, I also recently purchased the 2024 PHB. It feels like this error/problem occured right AFTER I bought that for myself. Does anyone know what happend here? I also lost the access to the original School I had set them up with :(

I read in a different thread that buying the PBH would help add more options to Arcane Tradition, but that thread didn't mention shared content, and it seems adding/buying the PBH CAUSED this in the first place. Any ideas?