This is a known issue in the license server we use (CodeMeter runtime) in some distributions, were the server is not restarted correctly on startup.
You can fix it manually upgrading to the latest CodeMeter runtime version: 5.21. You will find the installers for linux here:
You can also restart the server manually with the following command:

sudo /etc/init.d/codemeter restart

If the issue persists after upgrading CodeMeter runtime 5.21 don't hesitate to contact us again