Welcome to iRV2.
Going to have to ask questions to clarify your issue .
You have shifted your transfer case into neutral, using the dash electronic transfer case shift control for flat towing ; Correct ?
Now your trying to use the Jeep , and the transfer case won't shift back into gear ( high range ) using the electronic transfer case shifter ?
OR has the transfer case shifted back into gear ( high range ) and you can't move the transmission gear shift lever from neutral " gear shift knob wont budge " ?