I can’t Active my WSDesk premium !

Hi,
I have a problem activation my premium plan of WSDesk. I followed all the steps in the video tutorial and I found that the active page in that video is different tahn what i have as a non-premium plan!. I tried to deactivate the plugin and delete it then re-install it, but the problem is still there. So would you please tell me the right steps to active my plan that I bought it, I real need to start my project as soon as possible. This is a very important issue and I’m waiting your reply.
Thank You,