SERVER_ERROR NO: 6 MSG: Unknown access key, check if the key is correct

Hi,

i get this error SERVER_ERROR NO: 6 MSG: Unknown access key, check if the key is correct I cut and paste the code. Even used notepad to get it all cleaned up, but stil;l get this message.

I would like to test the plugin first. Is that possible or do i get this error because i have not paid anything yet?

I just activated the plugin. It said SSL was not activated so i tried changing the domein to https://domain. Is this maybe the problem?

The page I need help with: [log in to see the link]