RAX12 2.4 wifi issue

I upgraded to the RAX120 Nighthawk and had been running into issues with it not connecting to the 2.4ghz wireless network. Finally found a fix on here by disabling the 'OFDMA' Wifi 6 settings and everything seems to connect just fine now. (Router is on the latest firmware as well). being able to connect to Wifi 6 / ax was one of the reasons why I purchased this router. The previous Nighthawk router I had didn't have this issue amazingly with wifi 6.

So, I was just wondering, is this a firmware or hardware issue that's causing this problem? I read sometimes that having quotations in the password causes problems but, I never used those in it. It's just crazy that such an expensive router can have so many problems compared to even my old $100 router I use to use before this.