I purchased "SDL Trados Studio Starter 2015" in November, last year and downloaded it into my Toshiba laptop; however, a few months later I purchased a new laptop so I deactivated my license and re-installed the program into my new laptop. The program started with 30 day trial which was fine as the instruction said it would. When it expired, I tried to activate the program with Activation code I received initially, but it keeps showing an error message that says, "Need to purchase the program".  I know that the license I purchased is still valid.  Am I supposed to receive a different activation code as I deactivated it once?

Please tell me what it is I am doing wrong and how I can re-install the program into my new computer.

Thank you,