gearbox fluid service

2020 Model X Long Range 22" Wheels Received this notice multiple times on a recent road trip- very frustrating. A little turtle symbol would pop up on the instrument display panel and next to the turtle the words: "Power reduced Service is Required" appeared, and immediately following this...

I have tried many times to schedule service via the App and when asked to type in my "location", the App does NOT accept it. I type it in and the process will NOT move forward. I cannot press "next", not service centers or times or anything comes up. HOW do I schedule service if that feature on...