Recently setup Nighthawk XR1000 and my phone and chromecast are having issues with certain apps

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TheBroheim wrote:
I have found a solution. Ticking "use as wireless access point" has worked. Not sure why that would prevent certain aspects of android OS to not load anything. But it is now working perfectly.

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if its running in access point mode, you're not using a simple modem. You're gateway has its own integrated router. 

It causes a double nat. Not all devices play nicely with a double nat. 

but putting your gaming router in access point mode, removes half the benefits of having a gaming router. 

A double nat happens when you cascade more than 1 router.
https://kb.netgear.com/30186/What-is-Double-NAT
Fixes? There’s 3 options but only use 1.
1. Put the modem/gateway in modem only/pass through mode. This disables its routing functions.
2. Leave the modem/gateway in router mode but put the Netgears IP address into its DMZ. This forwards the data to the netgear. You can either leave the modem/gateway’s wireless enabled or disabled. Just make sure its using a different wifi channel to prevent interference
3. Put the Netgear into access point mode. This disables its routing functions. Wifi/ethernet still works but it does disable some features.
https://kb.netgear.com/26765/Which-features-are-disabled-on-my-NETGEAR-router-when-it-is-set-to-AP-Mode