Bug fixes and other improvements We've created an updated version of Beeper Mini that fixes an issue that caused messages not to be sent or received. You can get the update directly from beeper.com/update on your phone. We are still doing some final testing before submitting the update to the Google Play Store for distribution to all users. If you encounter any issues, you may need to uninstall and reinstall the app.
But Apple users don’t care enough to solve the issue. Partly they see it as an Android problem,if they see the problem at all.
In their defense, they have a messenger that works well, syncs to the desktop, sends high quality, etc, to other iOS users. So I can understand their not wanting to switch, or even seeing an issue.