velled

Could you try deleting and reinstalling to see if that would reset anything? I'm not an expert but maybe you needed to register or login again. I know there are several apps here that require a log-in as an iOSGG forum user before you are allowed to play. If this is a jailbroken app then I wouldn't know a thing, sorry. 

The Sims™ Mobile By Electronic Arts v22.0.0
com.ea.ios.simsmobile
Minium iOS Version: 9.0
Price: Free
Last Update: 2020-08-03T22:30:07Z
iTunes URL: https://itunes.apple.com/us/app/the-sims-mobile/id1144258115?mt=8&uo=4
 
  Hack Requirements: - Jailbroken or Non-Jailbroken iPhone/iPad/iPod Touch.
- A Computer Running Windows/Mac/Linux.
- Cydia Impactor software.
 
Features:   - Unlimited SimCash
- Unlimited SimCoin
And More...
 
Note: Finish the tutorial Before Using this hack or the game will freeze.
 
 
Hack Download Link:    

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How to install:
Step 1: Download the Hacked IPA file onto your computer.
Step 2: Download Cydia Impactor from here.
Step 3: Connect your device to your computer using a USB cable.
Step 4: Open Cydia Impactor.
Step 5: Drag and drop the IPA file downloaded in Step 1 onto Cydia Impactor
Step 6: Cydia Impactor will ask for your Apple ID and password, which is verified with Apple only and is used to sign the IPA file. If you’re not comfortable providing it, then create an alternative Apple ID and use that instead.
Step 7: After the app is installed, go to Settings -> General -> Profiles (or “Device Management” / “Profiles & Device Management”). Find the profile with your Apple ID and open it.
Step 8: Tap on the Trust button.
Step 9: Now open the app and enjoy it.
 
Credits:
- iOsGG.com
 
Video/Screenshots:   
 

Right here