QuickBooks doesn't support any payment solutions at the moment. We request you to visit here https://developer.intuit.com/app/developer/homepage and log a ticket. Our developers may be able to help you.
At the end of December 2019 I created my first invoices with Quickbooks, and they were sent to customers with RazorPay links.
Then somehow (in Jan) RazorPay links do not appear on the new invoices (even that I linked my account to RazorPay). How can I enable it again?