Before installing the eSRP mobile app, you need to change some settings on your mobile device.
Go to your device setting, and tap Apps
Tap Special app access
Tap Install unknown apps
Tap the browser that you are using to download the eSRP mobile app
Turn on the Allow from this source toggle
Now, go back to the page in browser where you can download the eSRP mobile app
Tap Install Android app
Tap the app installation file at the bottom of the screen
In the installation confirmation dialog box, tap Install
After the app is installed, tap Open to start using it
When you open the eSRP mobile app, you might see a message asking you to allow the eSRP mobile app access your location. Tap OK
Tap Open settings
Tap App location permissions
Tap eSRP
Tap Allow only while using the app
Now you can set your PIN. For this, follow the instructions that you have received in the invitation email