>>284098597
Just reinstall through mod assistant it shouldn't really conflict for the most part unless you had a lot of out of date stuff. You should only use the Mod Assistant for installing mods in the future though. 
Beatdrop was only for managing playlists on beastsaber. However, since playlists are all fucked up at the moment this isn't very useful and you might as well just use the song downloader to grab all the top ranked songs.