Thanks so much for the quick response!

To clarify, I am not asking about customers' rejected payments.

I recently signed up for Quickbooks Online, and I am requesting that QBO let me allow my customers the option of paying me with their credit card or ACH. 

This is the request that I have made to QBO that has been rejected.

Your answer was so helpful, if you have any links or other information regarding my specific situation, I would really appreciate it as this is a deal-breaker for me. If I am unable to activate this functionality in QBO then I will have to close my account and return to Freshbooks.