When you install the Abacus app and try to open it, you may receive a popup message that says "Untrusted Enterprise Developer". In order to open the app, you will need to trust the app.
- Go to your iPad's Settings
2. Go to General > Device Management
3. Press Kinnov Pty Ltd
4. Trust Kinnov Pty Ltd
5. Launch Abacus from the Home screen