for the last several yrs, i've used att's pace 5238ac cascaded to my nighthawk R8000.

pace wifi off, all wifi from nighthawk.

recently got a bandwidth update (internet-24 to internet-50)
and att swapped the pace for arris bgw210-700

now i cant get the cascaded setup to work.

i've been googling all week w/no joy...

any wisdom out there??