Decided I'm probably overcomplicating the whole thing. Didn't realize I could replace the Spectrum router. Returning my range extender. Ordered a TP-Link AC1900 router. I'll see how that works first....

@Carl Thank you Carl. I had another thought. Could I use a Cat 6 Ethernet cable from my Spectrum router to the TP_link extender and use the extender as an access point? This would work fine if I...

Good to find this thread after spending an entire day trying to get my AC1750 to access internet on my Spectrum router. (a warning on Amazon might save a lot of hassles for everyone) As I understand...