We already took note of this feature request, Luebweld.

I can see how functionality to add a payment link on statements would be beneficial to your business. However, we don't have a specific timeline as to when it will be available. You can visit our Customer Feedback for QuickBooks Online website to track your feature request.

For more details about sending a product suggestion, please see this article: How do I Submit Feedback?.

Additionally, I've added this article that'll help you personalize your sales forms in QuickBooks Online. This helps you add the info that matters most to your business: Customize Invoices, Estimates, and Sales Receipts.

I'm just a comment away if there's anything else you need. Take care always, Luebweld.