It is safest to destroy the local database and let the user log into the application again:
Stop the service before deleting database
sudo systemctl stop nordlayer.service
Delete the database
sudo rm -rf /var/lib/nordlayer/nordlayer.db
Start the service again
sudo systemctl start nordlayer.service
Note: In case you have any questions or are experiencing any issues, please feel free to contact our 24/7 customer support team.