Hello,
to activate Parallels Toolbox v3 you can use:
- Parallels Desktop subscription license
- Parallels Desktop v14 perpetual license (in this case you will have 1-year subscription for Parallels Toolbox).
- Parallels Toolbox subscription license
If you have Parallels Desktop v13 perpetual license that you can use Parallels Toolbox version 2.6.1 or earlier.