After receiving the email from Netgear about the security upgrade I followed the links. When I tried the link below the status bar moved about 20% and stopped. It hasn't moved any more in about 30 minutes. Don't know what to do and I could find a satisfactory in the forum. I am running an xfinity modem, an iMac with macOS High Sierra 10.13.2.
I haven't had any major issues with the extender but I do have to restart it occasionally.
