Activate did not work

Purchased Alizee Pro, uploaded zip file to WordPress account, clicked “Activate” and the site disappeared. Had our web host revert to previous free version. What went wrong, how can I fix it? Paid $25 to have site disappear?

You must realize this is something that doesn’t happen. Can you be more specific, how did the site disappeared, it went blank?
Are you sure you have uploaded the zip file exactly as you have downloaded it after you purchased?