In the past 7 days, two of my customers were not able to get their payments to process, they hit send and nothing would happen. I had to run the card on my end.
When you have a new customer, and they are a big player...e.g. Northrup Grumman, for example, you want to provide them as little hassle as possible and you hesitate to suggest they need to do anything extra or that the problem has to do with their PC's browsing history.
I will post your trouble shoot as a script in my invoice 'signature' and see if that provides some relief.
I did provide the precise prescription to my first customer, but he seemed to be bothered by the idea of having to have to take extra steps so I just took his number over the phone. He to is a big player in the industry and I am thinking, these big guys have some pretty hefty IT protections. Often my invoices show up in spam or not at all and I have to send them a link in place of the automated email from Intuit.