[OPEN] Cant have more than 7 Sims in household

@Nozladi Yes, that's what OP was seeing too and I did too in their game. 6 Sims works, 7 doesn't. I was able to narrow it down to a particular Sim in the OPs game (the Sim wasn't pregnant).

Could you try the following to figure out which Sim it is (I can't check your save as you're on console)

1. Backup your save in case anything goes wrong
2. Start with the female Sims/Pets
3. Remove the first Sim from the household and add a random other one in instead (you can do that by any means, I found that cheating is the easiest by using testing cheats and use add/remove. If you're working on a backup of the game, this shouldn't be a problem for your achievements)
4. Check if they can try for baby.
5. Repeat for every Sim (reload original game after you checked a Sim) until you can try for baby even at 7.
6. Once you found the culprit, please upload to the gallery and post the name here.