When sending invoices via QuickBooks Online app, make sure you're using the same invoice template when sending it via website. Since as long as the template is the same, what you can do in the website is the same on the app.
Moreover, I invite you checking our Manage Customers and Income page. It contains great articles and learn some best practices in managing your payments effectively.
If you have any other questions about this, get back to me by commenting below. I'd be more than happy to answer it for you. Have a wonderful day ahead!