I have recently purchased a Netgear DM200 modem to work with a whole home mesh network. However, I'm having difficulty setting up the modem. Using the network genie whenever I try and log into the ISP using: "firstname.lastname@example.org" it will always say the ISP username or Password is incorrect. I have tried with BT as password and without it at all. All the time it returns the credentials are incorrect. Anyhelp would be much appreciated.