Unable to register router for genie remote access

HI elanie; thanks for replying ..... I am going to attach a screen shot of the error message I get when trying to register my R9000 for genie remote access......here is something odd to think about.............if I take my AT&T Uverse gateway out of bridge mode to where there is a double NAT going on the genie remote access will work but as soon as I bridge the gateway it will not register or work...another odd thing I have noticed is that in the past week I have brought three different Netgear routers to my home and each time my gateway is put into passthrough mode my WAN IP address is the same every time.....................even if I reboot my gateway it still passes the same WAN IP address to the netgear so I'm not sure if that would have anything to do with this problem............when I take the gateway out of bride mode then the netgear router has a different WAN IP it begins with 192....... which we know is double NAT but I definitely don't want to leave my network set up to doube NAT just go use the genie remote access app........I just can't figure out how the Orbi worked flawlessly with gateway into bridge mode yet the R7800 and now the R9000 will not?.............I hope this info and screen shot will help............thanks, James