@networkpiyush 

It doesn't list AX as a mode option on your routers on the 2.4ghz so I can only suggest to use smart connect and ensure the ax option is selected on the 5 ghz band in the mode settings, this may fix it but I'm not confident as it doesn't look like a fault as such rather an omission in the firmware as higher in the range models do have the ax option in the 2.4 ghz wifi mode settings, check these settings anyway in case a later firmware has added it but other than that it's most likely not been included in the base model & before you say it yes it should state this on the box before anyone considering buying one does.

  @networkpiyush Hi there! It's disheartening to hear about the WiFi 6 issue on your Archer AX10. While WiFi 6 does support 2.4GHz, it could be a software limitation. I recommend contacting TP-Link support and sharing your experience. They can guide you through troubleshooting steps and determine if a firmware  SLOT update can address this concern. Hopefully, they can provide a solution to fully leverage the WiFi 6 technology on both 5GHz and 2.4GHz bands. Best of luck.