[@Oispace] Ignacio, never mind that!
This version of the program has a different registration mechanism that is not license related. I don’t know how it is provided. However, if this version is replaced by the one downloaded from the official website or during an update, registration is required. Everything will be fine if you never update this program.
If you accidentally do an update, it will work, but there will be a message that the program is not registered. You can reinstall the old version and everything will be the same as it was before.