Hello there, @amy62.
I can see the importance of the product suggestion you've pointed out. I'd recommend sending feedback to our product developers so they can assess this for future enhancements of the QuickBooks Online (QBO) Mobile App. I'd be happy to show you the way on how to send feedback through QBO on browser.
- Go to Settings and select Feedback under the Profile column.
- Enter your feedback about having an invoice payment link on QBO Mobile App.
- Select Next.
Also, I'd encourage you to check our Firm of the Future page to see more of the latest product updates of QuickBooks.
Feel free to let me know in the comment section if you have other questions. I'm here to back you up.
