All of the usual "reset, wait and reconnect" does not fix anything

What Firmware version is currently loaded?

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

Be sure your using a good quality LAN cable between the modem and router. CAT6 is recommended. 

How was the system updated? Orbi app or RBS and RBS web page manually using a web browser?

Did you make sure any RBS deployed was updated first then the RBR lastly?

How many RBS do you have deployed? 

What is the size of your home? Sq Ft?

What is the distance between the router and 📡 satellite(s)? 30 feet or more is recommended in between RBR and RBS📡 to begin with depending upon building materials when wirelessly connected.

https://kb.netgear.com/31029/Where-should-I-place-my-Orbi-satellite 📡