I was having issues with v2.x and I updated this plugin to the newest and I also moved to host on FatCow. The problem is that in the settings tab there is no place for me to set who to pay to. In the older versions I could change the settings. At the moment when someone adds the image to their cart and goes to check out it goes straight to paypal sandbox.
you should still have the options under settings > payment and enter your paypal email also here is where you can specify if you are using sandbox or production.
I put the site in debug mode and it seems it is throwing up some PHP errors. I am not sure if these are causing the payment tab to malfunction but here is the URL to the pastebin. http://pastebin.com/8NtruSiJ
I checked but this option is not selected. The tab just doesn’t seem to exist. If I change the anchor to #payment in the url to try and manually access the section, it it highlights the reset tab hub doesn’t display anything.