Orbi RBR750 login via browser - password never resets

There is a community forum specifically for the AX product line.  People who participate in that forum may have more experience with the product than those of us (in this forum) who have the older Orbi product.

https://community.netgear.com/t5/Orbi-AX/bd-p/en-home-orbi-ax 

That said, my paperclip has never failed me.  It is absolutely guaranteed that after a factory reset, the web credentials will be "admin" and "password" --- for sure.  My guess is there is some combination of browser cache and confusion that has you in a "loop".  I would give up on trying to fight it and do a reset.