Connecting Orbi router to a Nighthawk?

Review these for configuring AP mode on the Orbi system:

https://kb.netgear.com/31218/How-do-I-configure-my-Orbi-router-to-act-as-an-access-point and https://www.youtube.com/watch?v=H7LOcJ8GdDo&app=desktop 

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mirama44 wrote:
Helli,Hello, me again. I reread your post and you said to use WAN port on orbi router for AP mode. I'm not sure what that means. I have my internet provider cable coming into my orbi router into the yellow "internet" connection. I have my cat 7 in one of the Orbi's other connections running outside, underground in conduit about 150 feet to my outbuilding where my nighthawk router is located. I plugged the cat7 into the WAN port of my nighthawk router. I cant get internet. I plugged my laptop into the cat7 connector in the outbuilding and cant get internet. The other night you suggested to put orbi into AP mode. I put the orbi into AP mode but then I couldn't get internet anywhere in my house. I had to reset the whole orbi system and reset it up. I did retest my cat7 cable today and tester still reads that everything is good.

I was wondering was I supposed to put the nighthawk into AP, not the orbi?

Thanks for help!

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