We would need the Serial # or MAC address of the unit.
Rogue Pro DB has a License Page: http://192.168.89.1/cgi-bin/license?setup=license that has the MAC address.
Rogue Wave and Pro 2.4 GHz have a License Page: http://192.168.89.1/?setup=license that has the MAC address.
Professional Series should have a similar License Page. With the Serial # and MAC address, we can look up the device and give you a link to re-license it and fix these errors.
Power fluctuations or spikes in power to the system are usually the cause of this issue. See Power #1 above.