Qb stoped working on my iPhone 12 and my iPhone 10 two days ago

I understand the importance of being able to access our QuickBooks Online account through our mobile devices, @Thermal Alchemy. 

Since this issue has been going on for a while now, I recommend contacting the support team. They have the resources to determine why you're experiencing this while ensuring all your personal information remains protected.   

Here's how: 
 

1. Go to the Help menu. 
2. Choose Contact Us. 
3. Click the appropriate tab that matches your concern. 
4. Select how you want to connect with us: 

• Phone number - Call our support line directly. 
• Chat - Start a conversation. 
• Callback - We'll save your spot in line and call you back. 

In the meantime, we can use your iPad or laptop to access QuickBooks to continue managing your business. 

You can read this article to learn how to previous fiscal year and prepare for the new one in QBO: Year-end guide for QuickBooks Online.  
 

We appreciate your patience and understanding. Hit the Reply button if you have QuickBooks-related concerns. We're always available to assist. Take care!