MyNet N900 Central registration message issue

I’ve had an N900 Central for several months now and everything works great, except anytime I access the router there is a message that it hasn’t been registered. I click the OK button, open the registration page, enter my details and hit the register button and nothing happens. So I once again hit the message ignore button asnd forget about it till the next time. I know it has no effect on the operation of the router, its just very annoying.

Can someone tell me how to get rid of this for good?

Can’t tell how to get rid of, but Iregistered at wd ste, continued to get message until today when again attempted registered via router, said i was already registered, no more notifications so far.