We had a month and a half of no declined payments.  I was so excited, hoping that QuickBooks had solved the issue.  However, there were three declined payments yesterday (6/29/2022).  I re-sent the invoice hoping that would re-set the payment link and I changed the  Industry type in my account profile as one of your support personnel had told me to do.  Nothing worked.  The customer tried to make payment with two different accounts, so that tells me it is a QuickBooks issue again.  It is so frustrating as a small business trying to stay afloat in this economy when a customer cannot make a payment.