WB 8.02 is working fine on Win 8.1 here, so it is compatible.
It would help others to help if you clicked on the ? in the top right corner of WB and copied the info there and pasted it here. Doing that will provide information to those more knowledgable than I to get to the bottom of your issue.
It may be that your copy of WB has not activated correctly for some reason. If so, it will noted in the text you copy and paste here.
Hopefully this will help get the ball rolling to a solution for you.