Avast IS is not accepting license key

Hello,
After enetring Avast key or license file Avast Security says OK.
However License status stays Unprotected.

For Avast Cleanup License status shows green and protected.

Regards,
Jiri

Submit a support ticket >> https://support.avast.com/support/home

What OS/SP ?
What exact version of avast ?
Is there any other security (related) software installed ? (or was there)
Already performed a repair of avast ?
Already tried a clean installation of avast ?