Thank you so much for the reply. I have deleted the app, rebooted, and reinstalled but that didn't help. I'm using the app on an iPhone. I can log into the incontrol account without problem on a computer and note that no journeys have been recorded in the account despite the fact that I've been driving all over since I picked it from the service department on Friday.
The dealer appears to think that I screwed something up with I used a T-Mobile sim card but I don't see how that can be the case.
I'm 99% certain service manager is wrong.
It sounds to me like there is a problem between vehicle and Jaguar InControl cloud. This would impact not only remote but anti-theft and possibly emergency notifications as well.
Here's what I think might be happening; I suspect when you were at the dealer setting up the InControl account in the vehicle the vehicle was connected to the wifi network at the dealership. This led the telematics remote system to think it was supposed to communicate through wifi NOT through the built in telematics connection. Either that or when the dealer originally did PDI car was connected to their wifi and the whole telematics is trying to send data through a now disconnected wifi connection.
Some things to check:
1) go into Connectivity settings in vehicle and make sure wifi turned off, if it was on see if that makes a difference in remote behavior
2) possibly go back to dealer and have them re-setup your incontrol account in vehicle but with car off wifi network
3) a basic thing to test is if your jaguar assistance button works and connects you to Jaguar, don't test the SOS button! this would let you know telematics module is at least working.
Just guessing but I think the above may be at least possible pathway to solution.
Final thing, when you say dealer not sure if it's sales or service trying to help, best bet is service and someone who has read up on telematics system.