Craft of the titans

I have attempted to play craft of the titans with my friends,version 1.2c but when i join in rejects 3 of the mods, i've tried to disable the mods but then it doesn't let me join because i'm missing the mods. any clue?

Yup, in curse/twitch me (and my friends) all downloaded version 1.2c (which is the recomended/automatic version) and all got the same message

I'm going to assume you meant to do that in the twitch launcher, i went into craft of the titans, hit the 3 dots near the top right, hit open folder, and renamed those 3 files with .disabled at then end, when i joined the server it still immediately kicked me saying that those 3 mods were still invalid. Since i wasn't too specific the exact messages reads "Mod rejections [FMLMod:nuclearcraft{2.3a}. FMLMod:openmodularturrets{3.0.0-191}. FMLmMod:omlib{3.0.0-117}]" in the console it just says i lose connection, it allows me to play single player, is the wrong version downloaded to aternos?