I have a Max Transit Duo and I’m using 2 different sims which everything works great. My internal wifi is fine and I don’t have issues with it. I can even use the 5GHz WIFI WAN and all is still good.
However, if I enable the 2.4GHz WIFI WAN, it kills my internal WIFI. It stops broadcasting the SSID and my devices lose connection until I disable the 2.4GHz WIFI WAN then the SSID pops back up and everything is fine again.
I am on the latest 8.1.1 but I have had this problem for probably the last 3 or so versions that I was aware of. I have reset my transit and stared from scratch. I don’t have anything unusual for my AP config.
Any help would be appreciated.