Hello, everyone.

I understand the importance of creating your invoices through your mobile app and appreciate the measures driven to resolve this matter as it affects running your business using QuickBooks Online.

Furthermore, I suggest contacting our customer support team. In doing this, they would determine the best course of action and conduct an investigation if necessary.

Furthermore, know that it's possible to personalize your invoice in your QBO app. You can read its thorough steps in this article: Customize invoices on QuickBooks mobile app. 

Don't hesitate to return to this thread if you have additional concerns with your invoices on mobile. I'll be here to address them at any time.