Pepwave max transit duo only putting out one frequency

I bought my device from mobilemusthave and set up my device to have two Sid’s. One for 2.4 and one for 5. I set it up exactly how mobilemusthave did it on their video. For some reason both frequencies show up at first but after a short time the 5g one is no longer visible and I can only connect to the 2.4 ssid. Even when I just have one ssid and prefer for things to connect via 5ghz they still seem to connect to 2.4. Anyone have a solution on this or if it is a known issue?