Используйте приложение APKPure
Историческую версию [Old] Riot.im можно получить на Android
Эта версия была заменена новой версией в Google Play Store
This version of Riot has been replaced by a new release on the Google Play Store as a safety measure.
Please export your encryption keys, uninstall this app, and install the new version. See https://riot.im/reinstall for more details.