FileBot

Hey, long time fan of the software btw.

I bought a licence key about 11 months (Jul 30, 2018) ago and installed it on my NAS synology. I followed some tutorial because i am a noob and am not familiar with this stuff.

Now i am on a Ubuntu machine and what to have my licence activated there.... I have the licence key file, but where can i find instructions/tutorial/information on installing it on the ubuntu machine?

Also will the licence key work on both machines?

License should be per-user.
Have you tried viewtopic.php?f=8&t=6121 ?
If you have the file it should be quite straightforward.

You can use FileBot as usual, and when a license is required, it will ask you to select it.