Their reliance on phone support for most operations is absurd. I saw five people attempt to use the kiosk - and all were required to call phone support for various reasons! The kiosk complained about DOB missing (date of birth I guess?), yet there wasn't any field left unfilled. Changes in unpaid/draft transactions resulted in duplicate ones instead, and they could only be deleted by calling support. The kiosk software was filled with dumb errors like that. I could go on an on.
Using cryptocurrencies seems like a good idea, but I'd bet just improving the kiosk software to make phone support a rarity instead of practically a requirement would be way more efficient at reducing cost.