To reinstall the app on a new device there are two steps required.
Step 1: Request a new pin.
Step 2: Download the app again using the device specific instructions below.
Reinstall Android
To manually install or update the Android app, simply go to the Play Store and search for the app. If an update is available, the download button will say Update instead of Install or Open.
Reinstall iOS
When reinstalling the iOS app, the Apple Redeem code that is supplied with the new pin email is not required and will only present the message: "Cannot Redeem Code. You've already redeemed this offer."
As the iOS app is a Private app, you cannot just search for it on the App Store - the app does not exist for the general public. The user needs to go into their existing purchases on their iPhone and the private app will appear in the list for re downloading or updating. See the Apple instructions below...
1. Open the App Store app.
2. Tap the Sign-in button or icon at the top right of the screen - see screen 1 above.
3. Tap Apps - see screen 2 above.
4. If you use Family Sharing, tap My Apps or choose a family member’s name to see content that they purchased.
5. Tap "Not on this iPhone".
6. Find the app that you want to download, then tap the Download button.
1. Go to Settings.
2. Tap App Store.
3. Turn on or turn off App Updates.
Open the Google Play Store app.
At the top right, tap the profile icon.
Tap Settings and then Network Preferences and then Auto-update apps.
Select an option:
Over any network to update apps using either Wi-Fi or mobile data.
Over Wi-Fi only to update apps only when connected to Wi-Fi.