CLEARTEXT communication to 203070e0c273.ngrok.io not permitted by network security policy code example
Example: cleartraffic to true
<?xml version="1.0" encoding="utf-8"?>
<manifest ...>
<uses-permission android:name="android.permission.INTERNET" />
<application
...
android:usesCleartextTraffic="true"
...>
...
</application>
</manifest>