Email address used when purchasing incorrect so now can't activate

Hi,

I purchased a second license for NTFS for Mac today but it auto selected an incorrect email address (which I didn't notice.) This means I now can't activate it on my Mac because the associated email address is non-existent. I have been trying to get in contact with support but having no luck.

All I need to do is change the email address associated with my order so that I can activate it. Does anybody have any idea how I can go about doing this as it's driving me nuts.....

Thanks :)