Nighthawk AX6 AX4300: Macbook pro can detect but can't connect with password

Hi community,

I have some issue with wifi connection to ask since my premium support already expired.

I bought Nighthawk AX6 6-Stream AX4300 WiFi Router in August, 2020 as the second wifi router in the house. And I found my macbook pro couldn't connect to the Netgear RAX45 Router while it can connect to the Verizon FiOS Quantum Router. But my iphone 11 Pro Max and my wife's Macbook Pro can connect to both routers. 

I already updated the RAX45 router's firmware and my macbook pro with the latest updates. I tried to delete both Macbook's wifi saved passwords and reconnect them to the both routers. The result is the same: my iPhone and my wifi's Macbook can connect to the bother routers, but my Macbook couldn't connect to the RAX45 router. 

The error message says: "Connection Failed."

I checked the Access Control in Netgear Router admin page, and Chose "Allow All New Devices to Connect" and saved the setting. But no help. 

What's wrong? Can anyone help me on this? 

Thanks a lot in advance~!

Simon