I had a license for my PVsyst version 7.2 on an old computer. When I tried to change it into my new computer the following message appeared "License has been blacklisted on this computer". It happens because I had already installed the license on this new computer in the past, but due to some performance problems I had to resend it into my old computer. Now that I have solved my performance issues, I can not get the license activated on my new computer again. In parallel, looking at my old computer, when I try to deactivate the license I find another problem, the software asks me to contact the online support, once the license can not be transferred. I've already sent an e-mail to the online support 6 weeks ago, but no answers so far ...