Earlier versions
The latest version for the 800X is 1.25.0: you download it from the home page. The earlier versions can no longer be installed.
Before you go back, write to us
Almost always the problem is not the version: it is a permission, a phone setting or a skipped step. Write to us in the Telegram group and we will help you figure it out. If the app you have now works, leave it as it is.
Telegram groupYou can't go below 1.25.0
Version 1.25.0 is a required update: an older version would open on a notice that can't be closed.