Hi and welcome,
Are you on Mac or Windows?
If you are on Windows, have you tried to reinstall eLCC as administrator? Have you tried to install eLCC helper (if you are on Windows, as administrator)? Have you tried to start eLCC (if you are on Windows, as administrator) and trigger Maintenance?
How is your USB-eLicenser connected? To USB2 or USB3 port? Via USB hub (active or passive) or directly to the computer? How old is your USB-eLicenser?