I don't know to which topic i should respond so i choose this one.
I'm havig problem activating my licence. It says that my serial number is not valid.
It was probably upgraded and/or the Subscription has lapsed. You will either need to contact your reseller or perhaps philip.s on the boards here will spot you.
I can definitely check validate the license if you could send me a Private Message (click on my philip.s profile name and then "Send this user a private message") with the serial number. Another option is to contact our License Assistance team directly for additional support.
Start with some of our most frequented solutions or visit the Installation and Licensing Forum to get help installing your software.