mods/cc gameplay interactions not working in certain saves

My Sims 4 game has been working normally, until for unknown reasons I lost the ability to use my mods. I repaired the same, uninstalled and reinstalled twice, and cleared my mods folder and reinstalled all my mods individually.  I am now only able to use CAS and build mode mods. I can interact with cc items, use all CAS clothes/hair, and use most CAS sliders/body mods. Though I can't have any modded social interactions, access mod menus from clicking on sims, or access mod phone apps-- all of these simply don't show up as if I was playing without mods. Even more strangely, when going back to old saves, I do have these social options; though I tried downloading new mods and wasn't able to engage with those. I tried starting a new save file, and in that one I could do no gameplay mods at all.  This is such a strange issue and I don't know why it is happening. Can anyone help?