[WMR] Mods not working/can't get custom avatars

Not sure if this is a known result of a recent update, but I've been having weird issues lately. Every time I run the ModAssistant it always says I'm at BSIPA 4.0.5, I update, and then after running beat saber I'm back to 4.0.5. I also can't get custom avatars working either from the mod launcher or from manually downloading the most recent version from the github - no matter what I do, there's no mod menu on my left at the main screen