Doesn't support a standard online shopping site which I have used master card with before. First they said it was because the Merchant was charging as a recurring payment even though it was just a onetime purchase then they said it might be the currency. Clearly whoever I was speaking with didn't actually understand why it was failing and then couldn't offer any solution and told me to try a different merchant. It's a 1 star rating from me because I'd expect wider support for more merchants and better customer support that could clarify exactly why the error messae was returned rather than speculate multiple possibilities.
Claim your business profile now and gain access to all features and respond to customer reviews.