You can use the Map View button to change the current location of the application. When you enter the Map View menu, you can see the Search icon in the lower right corner. Clicking this icon will open a search screen.
Please make sure that Location Services is enabled.
How to enable Location Services?
1. On your iPhone and go to ⚙ Settings > Privacy > Location Services. Make sure Location Services is enabled and Location Services for the app is set to "While Using".
2. Make sure your cellular data or WiFi is turned on and you have a connection. If location services are still not working, you can restart the application or try switching to a different Wi-Fi network.