I have the LtAP mini to which I put the LTE R11e-LTE-US card. I loaded the latest long-term software 6.47.10 and the LTE interface does not appear. When I look at the USB resources, the R11e-LTE-US shows up as Google and the Android device provider followed by the serial number. Does anyone have an idea how to correct this or why it is happening?
RouterOs 6 or 7 ?
Try do System > Reset Configuration > Reset Configuration button
And at standard configuration it's should be work. You should provice some export file form unit to analyze it.