If you have a problem with fraud-related chargebacks, you would benefit from Verified by Visa; otherwise a traditional merchant account will work just fine....
The cryptocurrency crowd refuses to learn from reality, history, economics or anything that is not related to the purely algorithmic aspects of cryptomoney....
If you followed my suggestions you'd be very likely to end up having a new merchant account and, even more importantly, keeping it for as long as you need it....
Though sometimes they do the opposite of what they say, people understand that PIN debit is more secure than signature debit and tend to use it more often....
