No, you don't have to create an account in this website to sign in. You have to use your Tesla credentials and if you want to obtain a subscription then you need an account here.

No, you don't have to pay twice for the app. This is a sync delay from Google after purchasing the app. Go to the Google Play Store and try to install the app on your watch or phone from there. If you already paid, Google is going to process only one payment and cancel the rest, you don't have to worry.

No, this app only works with smartwatches that runs on WearOS and have the Google Play Store.

After you subscribed to the prime membership open the app on your watch and click go to Settings > Premium > Verify Premium enter the same email address that you used to subscribe and press verify. You should be able to use the premium features. If you are unable to verify, please send me an email and I'll help you solve your issue.

Vent Windows
Close Windows
Steering ON
Steering OFF
Valet Mode ON
Valet Mode OFF
Activate Horn
Sentry Mode on
Sentry Mode off
Defrost ON
Defrost Off
Sunroof Vent
Sunroof Close
Activates Panic Mode
Charging Port Close
Charging Port Open
Charging Start
Charging Stop
Heated Seats Activity
Fan Modal
Unlocks Car
Locks Car
Opens trunk
Opens frunk
Stop and Unlock charging
Remote keyless drive
Flashes Lights
Windows Modal
Defrost Modal
Steering Wheel Modal
Valet Model Modal
Sentry Mode Modal
Charging Modal
Sunroof Modal

Try forcing a token refresh from Settings > Account > Refresh Token.

If that doesn't work try logging out and login back in.

This is the intended behavior. The app is stateless. It is not aware of the current state of the vehicle.
The reasoning behind it is that it helps to send commands faster than waiting for the car to wake up and then send a command.
The app will wake up the car and execute the command right after. You have all other commands inside the More Options menu item below the main screen.

Each command with a unlock/lock state and on/off state has it own command.

Still have a question?

If you cannot find the answer to your question you can always contact me via email. I'll answer as soon as I can.