Program lost licence key many times per day

I am using the free software of eM Client version 6.0.
Many times per day the programm ask me for the licence key. After some hours the program is working fine without any changes from my side. I scanned the FAQ but I cant find any solution for this issue. Please can you support me with this problem.

Thanks in advanced and best regards.

Andi Wachenfeld
([email protected])

Hi, do you use eM Client on multiple devices with one license?