7200 doesn’t see my router

7200 isn't a full model description. Can you be for detailed on the NG router model your having problems with? 
What router are you referring too? 

What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?

What model do you have? 

Device/router light implies you have an extender.

There's a support site with access to manuals, firmware, install guides, etc.
Go to https://www.netgear.com/support/
Type in your model number and from there it'll take you to the above.
Its a great resource to start with.