So, I manually installed the apocalypse magic mod (because i cant for the life of me use the nexus mod manager) and I put the esp and bsa(?) files into the data folder of the skyrim directory just like i did with the midas magic and that works fine. the apocalypse mod appears in data files and is ticked but no vendors sell the spells even after waiting for like, a week and someone told me that there is a vendor at the lady stone that sells these spells. yea........... no.

There's no vendor at the Lady Stone, lol.

Are you finding any spell tomes in the wild?

nope, and the help wither console command doesnt show the spell so the mod hasnt applied in the game.