I have tried registering for Pay-by-refund through the software and through my online account but it just gives me a boilerplate error message whenever I try to submit it. I tried contacting support but the person I spoke with had less technical knowledge than me. The only workable information I have is that when I try to submit it online it attempts to POST to https://pbrenrollment.api.intuit.com/v1/accounts/616094918/enrollments?productCode=07 but gets a 500 error.