Downgrade client

After the client was radically updated, I constantly have problems with updating data on my phones. I accidentally find out that the phone has not transmitted data for more than 5 days, for example. On one of the phones, there was an old client that was not updated. Everything works stably and without problems there. How do I return to the old version of the Android application?

Just download the old APK file from GitHub.

Thanks for the advice, but Google identifies it as a malicious application and automatically updates it to a new version.

Not sure what we can do about that.

maybe this helps: https://www.howtogeek.com/202297/how-to-disable-automatic-app-updates-in-android/

On my phone the traccar client also updates 4 days agao and i can not send data to traccar (only manually pushed).
Also no transmission, if the op is open.

Disabling automatic updates will not affect notifications from the Play Store that the application has malicious functions.

@Dmytro: Look for: "How to install an unknown APK file on Android?" maybe this will help.