Hi s.reichel and welcome to the forums.
Can you please send me via Private Message (click on my screenname camilo.lemos and then on Send This User a Private Message) the serial number and request code for the products needing activation?
Just as quick info, here is my activation window... it looks different to that you mentioned in the given reference page.
I can't see any request information...
This issue might be a result of your company’s web proxy causing an issue and blocking the activation.
Can you please try disabling all network / internet connections and launch the program again. If no network is detected, the manual activation process should kick in and bring up the request code for you.
Outside of sending Camilo or myself the request code via Private Message, you can also contact our License Assistance Team directly to receive an activation code.
Please accept as a solution if this fully resolves the issue, or reply with additional specifics so that we can troubleshoot accordingly.