AX5700 LAN IP changes not saving

Hi All - I am reachiug out to the forum here hoping to get some insight on a problem-  I Got this new router today , AX8  Nighthawk AX5700(the one with the funky imperial transport looking wings on it) , and trying to set up like my previous netgear router- However I am unable to change the LAN ip of router , it always reverts back to defaults  192.168.1.1 - what am I doing wrong here?? clicking APPLY each time and letting it do it's thing but always comes back to login as out of box IP address.  I updated the firmware as instructed , rebooted a bunch already. still defaults to generic IP  .. Grrr