Cannot Host Party

11.1.0 is the latest update. One of your first Sims you would have to retire so you can have that party with a new Sim. 
The game is essentially designed for you to retire Sims fairly often, it's sad to let them go. I had a hard time letting go of my Simself... But it's really cool to see where my Sims grand, grand, grand, grand, grand, grand, grand kids are now. 

11.1.0 is not the new update they had two updates back to back witch cause a license revocation in the Canadian Store and I have people who work in not only the main Apple corporate office but owns an Apple and it’s confirmed they were revoked here. 

*snip* I refuse to retire a sim to have a party this BBB is now involved due to 1. No party 2. Never got my grill in my inventory tho I have 100% evidence and 3. Can’t play due to no update and EA is not listening to Apple or me on how to correctly fix the issue.  *snip*

EDIT by EA_Jason: Don't be rude

yea Sure I’ll update as soon as EA figures mistake

EDIT by EA_Jason: Don't be rude

The latest update for Apple is 11.1.0, for Android it's 11.1.1.

Android got another update to fix and issue when you used the back button when changing a Sims appearance. Apple devices don't have a back button so Apple didn't get that update.

Back to your original problem, this is the solution for many people:
https://answers.ea.com/t5/Bug-Reports/Cannot-Host-Party/m-p/6772800/highlight/true#M3171

I understand that you're attached to your current Sims, but The Sims Mobile, unlike The Sims 4 is designed to go through generations.

I don't have another option for you than that. So if you want to throw a party you'll have to retire a Sim. If you don't want to retire a Sim, you won't have the option for a party.

For the other problems you mention, please have a peek at the bug list:
https://answers.ea.com/t5/Bug-Reports/List-of-known-bugs/m-p/6682688#M633
If you don't see the issues you have on it, do make a new post as this one is about not being able to throw parties.