AX6600 2.4ghz signal does not let my security camera's pair but works just fine on old router
I have 3 different wifi security cameras that operate on 2.4ghz signal and never had any issues with them from my previous dual band router. On the AX6600, I turned off "smart connect" and enabled 2.4 ghz. My phone connects to the signal just fine and is set to the 2.4 ghz wifi but I cannot get any of the 3 cameras to pair with the phone apps. However they pair just fine on my previous router so there is something about the 2.4ghz on this router that prevents cameras from accessing. I tried disabling firewall but didn't help.
I have troubleshooted every option for the camera's. They are factory reset and the AX6600 has been factory reset multiple times and everything points to the fault being this router and again my old router pairs the cameras just fine. I even placed the cameras within 10 feet of the router and they still cannot connect. Encryption settings, SSID, etc are now all on default. The camera security apps report that there is no internet available through the 2.4 ghz SSID and therefore they cannot talk to the camera hardware but my other devices such as laptop and phone has internet through that frequency.
In a final effort, I connected my old router and changed the SSID and password to the default characters of the AX6600 hoping that once I swapped back that the cameras wouldn't see a network change. The camera apps paired to the hardware just fine and functioned as normal. I then swapped back to the AX6600 but the camera's reported they were offline...something on this router is preventing internet access from my phone apps talking to the hardware. I deleted them and tried to pair again several more times but they always fail.
Is there some other setting that could prevent camera's from communicating with the apps on my phone?