To resolve the issue with the MyMazda app not working and your inability to start your car remotely, follow these steps:

1. Check for App Updates: Ensure that you have the latest version of the MyMazda app installed. An outdated version may lead to connectivity issues. Go to your device’s app store and check for any available updates.

2. Verify Vehicle Compatibility: Confirm that your vehicle model supports remote start functionality via the MyMazda app. Certain features may only work with specific models or configurations.

3. Ensure Proper Vehicle Conditions: For remote start to work, ensure that the following conditions are met:
- The shift lever is in the 'P' (Park) position.
- The vehicle doors are closed.
- The hood is closed.
- The engine is turned off before attempting to start remotely - learn more.

4. Check Network Connection: Ensure that your smartphone has a stable internet connection, either via cellular data or Wi-Fi. A weak connection can impede communication between the app and your vehicle.

5. Reset the MyMazda App: Log out of the app and then log back in. This can sometimes resolve connectivity problems.

6. Reset the MAZDA CONNECT System: You may need to reset your vehicle's MAZDA CONNECT system. To do this:
- Press and hold the volume knob, the back button, and the NAV button for about 10 seconds. This process will reset the system and could improve app connectivity - learn more.

7. Consult Online Resources: If the problem persists, check online forums and resources where other users may have experienced similar issues. Reddit has multiple threads discussing MyMazda app problems that can offer insights and potential solutions - learn more - learn more.

8. Contact Mazda Support: If none of the above steps work, reach out to Mazda's customer support for assistance. They can provide more specific troubleshooting based on your vehicle and app version.

Following these steps should help you address the connectivity issues with the MyMazda app and enable you to start your car successfully.

The Mazda app is not working. I tried several times to connect. I cannot start my car.