I had a JL and did the Rubicon and then when I did the Rubicon in the JT they would not send me one said it was based on me not the vehicle so they wouldn't send another one and the App still says it processing but their email said they wouldn't send one :-(. Also asked them to replace a stolen...
Here is where you find software updates you will need your VIN
https://www.driveuconnect.com
Or right to it
https://www.driveuconnect.com/support/software-update.html
TPMS from a lot of places work you just need to make sure to get the right frequency
From another thread on this
From AllMoparParts
TPMS 68464665AA Valve Stem fits all 2020 Jeep Gladiator JT models.
https://parts.allmoparparts.com/oem-parts/mopar-sensor-tire-pressure-68464665aa...