Anyone know why some mods simply do not work? I installed the AIO mod first, then everything else, then the tattoo mod last. The AIO mod appears to be working but the npc never appears at home. I've had 3 births but the npc for the tattoo mod never appears in the institute. Everything else seems to be working fine though.
AiO doesn't add any NPC characters as far as I know, if you mean why can't you see the full body hazumi image at home it is because you need to change some options.
Tattoo mod requirement is a bit of a mystery to me but looking at the page I think it is 3 unique pregnancies not 3 children birthed and it might actually be >3 meaning 4 pregnancies.
Install order and install instructions are more specific than just AiO first and X last.
Nothing against you in particular but every time a paid mod is mentioned as not working I have to remind people not to use the leaks from this thread or try to salvage files from old packs for use in new packs.
Nameless rehosts free works from others that should be compatible with his works but the scope of mods and difference between them is very wide. Joiplay doesn't support modloading the same way pc does so some mods will work some will not and some need even more specific install instructions.