upgrade from 7.5 to 8pro

hi help ,am trying to up grade from 7.5 to pro 8.i paid for it all ok… can someone tell what to do.its telling me I have 8hrs left. am new to Cubase,and getting now where ,maybe from the top guys/girls

If you paid for it, you should have gotten an activation code. Use that to activate the license in your eLicenser Control Center software.

thank you am trying to find it