Android app installation

Generally, to get the Android app to initially start downloading, it's required to LONG PRESS the link from the portal and choose the Download option.

Here are some version specific articles about security and installation:

• Android 8 Oreo: https://www.bestusefultips.com/enable-unknown-sources-android-oreo/
• Android 4.x : https://www.cnet.com/how-to/how-to-install-apps-outside-of-google-play/