I just "purchased" and downloaded the student edition from the Download Center, but after unzipping the download, the installer says that it's the evaluation version (figure 1).

I didn't think much of this so I tried to install it and after installation it pops up this message (figure 2) that says that the licence expired 4 days ago. 

I've tried to redownload and reinstall, but it has not helped. I've tried to search for the error code, but that hasn't helped either. 2 days ago I installed the student version of CST Studio Suite, could that impact the handling of licences?

How can I fix this?