Thank you for contacting us.
I've just checked at our PSP backend: and I see 2 trials with VISA: although the identification was 100% successful at your issuer, and all anti-fraud checks passed on our end, it seems like your credit-card issuer didn't authorize the transaction.
Please call your credit-card issuer/bank to check with him, as he must be seeing that "authorization refusal" and the reason from his end. We don't get the exact reason of authorization refusal on our end.
Probably our alternate payment processors (paypal and 2checkout) will have same results from the issuer, so best is to call them first to clarify.
All our contact informations are in "Contact" and "Terms" standard location at bottom.
You are welcome to use the contact form in "Contact" link at bottom if you prefer secure private communication regarding payments.