The app shows your car's screens and runs the car's own climate, seat, window and media commands. It stores almost nothing of its own, so most problems are the link to the car.
On the car: SP Avatr Kit → Dashcam. Turn on Share to phone and Phone remote, then scan the code it shows. It is the same code SP Dashcam uses. The first time, the car asks on its screen whether to allow your phone — tap Allow there.
If your phone has no camera available, paste the same link under the viewfinder instead. The link is a credential: anyone who has it can ask to control your car, so treat it the way you would a password.
Nearly always the car is asleep. A parked Avatr suspends its head unit to protect the 12 V battery. Unlock the car, give it a few seconds, and try again.
On the same Wi-Fi as the car — its hotspot, your phone's hotspot, or another network you share — the app finds the car directly, even with no internet. Allow Local Network for SP Remote in your phone's settings for that.
The car's screen shows Allow this phone? the first time a phone connects. Tap Allow on the car. Turning Phone remote off and on again forgets every phone.
Which controls a car accepts depends on its software version. The app reads the car's own list and greys out what your car does not accept — the values it shows are still read from the car.
Over the internet the picture is kept small so it stays live. On the same Wi-Fi as the car it is sharper and faster. Turn the phone sideways for the full screen.
Open the app once after pairing, so it can learn your car's commands. Then say "Hey Siri, SP Remote car status", "Hey Siri, SP Remote front defrost", or "Hey Siri, tell SP Remote" and say what you want.
Write with your car model, what you tapped, and what the app said. A photo of the screen is worth more than a description.