Android client - update interval

Hi

I set interval to 300 seconds, the app has been disabled from battery optimization, and background activity is allowed... but it looks lile the app is sleeping sometimes, which can be seen by investigating the status/log on the client
It is running on a Galaxy S10+

Any hints on what could be the reason for the phone not to send updates every 5 minutes ?

This could be the reason:

https://dontkillmyapp.com/