Hi everyone!

I am new here. Just recently bought my first CNC to play around with. And now I thought I ask here about my problem with all the specialists around.

I got a MK3DRV board and a license for the PlanetCNC TNG software recently.
Installed the board, the software the USB drivers all without problems.
Then I selected correct controller and updated its firmware.
Then I installed the provided registration key.

All looked fine.
However I get sporadic popups telling my my "license is invalid".

Would really appreciate if somebody could give me a hint what is wrong there.