So I installed the store on my personal site, which is a duplicate template and just changed the absolute path at skluiting.com and created a test link at the top, left of the page. This is the error that I received here: "There was an error during the connection with the First Data payment gateway".
Two completely different servers and still errors.
The error would be identical but I had Hikashop debugging turned off. When I turned it on I got this same error:
There was an error during the connection with the First Data payment gateway
Curl Err [56] : SSL read: error:1409441B:SSL routines:SSL3_READ_BYTES:tlsv1 alert decrypt error, errno 0
Can someone please check my settings or tell me that it just doesn't work? I see that the other person who had the same error, that you said you's look at his backend, is working.