EX2700 can not "see" my router Network

[desertsailor]

My EX 2700 extender was working nicely with my TP-Link Archer C9.  It stopped connecting after I made a reboot of my router.  The extender keeps failing to make a connection through WPS.  When using the Netgear setup webpage, the extender can "see" all my neighbors home networks but not mine!

I have a spare brand new EX3700 which I tried to use but I faced the same problem.  

I would appreciate any help.

Thanks

[plemans · Accepted solution]

What 2.4ghz wireless channel is the C9 broadcasting on? 

Try changing it to 1-6-11.

[plemans · Accepted solution]

What 2.4ghz wireless channel is the C9 broadcasting on? 

Try changing it to 1-6-11.

[desertsailor]

WOW!!

That did it. I had switched to ch.13 to help reduce interference from neighbors 😅.

Thank you very much for your help.