Click2Sell problems

Anyone experiencing "credit card declined" when paying using Click2Sell?
I use this payment processing company on my site to sell digital goods and lately people seem to be getting the message "card declined" all the time. I even tried a test buy using 2 of my own cards and also get the same problem.
I contacted the company and they say that everything is working fine.
This is killing my sales!

nope but their refund rates are higher than clickbank in my experience

For me, I have never had to refund anyone so far, fingers crossed.

I have never experienced that but try reaching out to their customer support, they are always so helpful!