Hi Giovanni Ereste
I have installed 2007 again and entered my license code. My first screenshot is the same as yours, with the two trial licenses at the top and my full license code beneath. My second screenshot has 'Official license file for order ######' and everything it covers listed below, it is not blank like yours.
It looks as if an association between the various components of 2007 is broken, or failing to connect to your online account info.
If you go to your online account info here and click on Licenses, how does your license entry look:
Is it listed with (Activation code) after the product name and does it show 'In Use 1'?
If this happened to me, the first thing I would try would be a Windows Repair of whichever components of the 2007 product you have installed (SDLX, SDL Trados Synergy 2007, then finally SDL Trados 2007). SDL Trados 2007 covers both TagEditor and Workbench.
Let me know if that solves your problem.
All the best