Hi there! I understand you’re having some trouble with Map My Walk. It works fine until you enter a building, right? This is a common issue because GPS signals can struggle indoors due to the interference caused by walls and other structures.

Let’s go through a few steps to help improve the situation:

1. Check Your GPS Settings: Make sure your device's GPS is turned on and has permission to use location services for Map My Walk. You can check this in your device settings:
- Go to Settings > Location and ensure it's enabled.
- Make sure that Map My Walk has location permission set to "Always" or "While Using the App".

2. Background App Refresh: Sometimes, enabling background app updates can help. Check the settings for Map My Walk:
- Go to Settings > Apps > Map My Walk > Battery and ensure it’s allowed to run in the background.

3. Update the App: Ensure that you have the latest version of the app installed. You can find updates in the Google Play Store.

4. Indoor Tracking Alternatives: If you’re primarily walking indoors, consider manually entering the distance or using another fitness tracker that works better indoors. Some users have found that GPS is not as reliable for tracking walks in buildings.

5. Testing Outdoors: After you've done the above, test the app outdoors where GPS signal is stronger to see if it's functioning properly.

Would you like me to assist you with any specific step, or do you have more details about your experience?