This isn't the experience we want you to have, @407RTI.
I'll ensure you get the right support available to get back to running your business flawlessly.
I recommend contacting our Merchant Support Team for assistance with this issue. They specialize in handling these types of inquiries and can thoroughly investigate your account to determine why the merchant cannot accept credit card payments. Rest assured that they will ensure the safety and security of your account while doing so.
I'll add this great resource here that may come in handy in taking your customer's payments in the future: Take and process payments with QuickBooks Payments.
You can always reply on this thread if you need anything else with managing your customer payments. We're always here to guide and assist you whenever you need help.