Max Household size with pets/roomates issue

Hi @o--Alexxandra--o Not sure where the info of up to 10 came from, 

• Without a pet-related expansion pack, household size is limited to eight.
• The Sims 4: Cats & Dogs expansion packs does not change this limit; a household can have any number of Sims and pets as long as the total does not exceed eight.

However, if not opposed to mods by the looks, there is a mod that increases the Household maximum number, though the Uni pack is still new and not sure if it is compatible, it's made by Twisted Mexi and called 'Full House' you'll have to search for it like "sims 4 twisted mexi patreon Full House" or "twisted mexi at patreon Python Patch Mod Updates - Master List"

Hope this helps,

Sasha

nb: If this solves your question, please mark the reply as having been the solution, so as to help others with a similar problem in the future. 
I have no connection to EA

I know about this mod, MC Command Center can do it as well, but I don't wanna change it because then I can't edit the household in CAS without deleting someone accidentally, otherwise this would be a great solution. I don't know I just feel like I've come across the information that if you have 2 pets you can have up to 10 members so many times that I was convinced it's true but maybe it isn't after all. Isn't this true for roomates though? I'm sure I've read and heard that you can have up to 10 roomates, no? :/

@o--Alexxandra--o no, only 8.. as outlined also in my 1st answer 👍 see more info on the Uni Game Pack at Carls Sims Guide

No it's on there:

"How many Roommates can I have?
Up to ten total Sims, though this doesn't relax the 8-sim household limit. If you have a full 8-Sim household, you can actually still have two Roommates."

So I should be able to have add her as a roommate. But I cant, the option doesn't appear through interactions and it's not on the phone either. It was there before.