Hi Bento,
Check the services to see if the license server is running. Open your Windows services> search the service "Sentinel RMS License Manager" > if it is already started, re-start and when it asks you if you want to re-start the "Micro Focus CES daemon" click on Yes. If it is not started, then stat the service and search for Micro Focus CES daemon and start it too.
Let me know if this resolved the issue or if you still get a license error message. Thanks.