1 donation purchase with "coupon"

Tried to purchase one donation with my coupon and site keeps bumping up to two. Recently purchased 3 and no problem. Need the other one as I wasn't sure what the exchange rate was going to do and only had a fixed amount of $$ on my prepaid card so just ordered the 3 and got another card for the fourth - Site wont let me purchase just one (or am I doing something wrong again lol)
Dr. Bob

My panel has the same problem

Well that issue seems to have been resolved on my dashboard but now they have removed the Visa option - Dam, I had just figured out how to jump thru all the hoops n hurdles to do it using a Visa gift card - Any chance of that option coming back i.e using Visa and coingate?
Dr. Bob