Online presence steadily decreasing, I do not know why

[Alexey]

@aseegy

and apparently the service did not start automatically.

Usually this happened if some required system services did not start before the node start, i.e. slow boot.
The fix:

Node offline after latest Windows update

Please, show result of the PowerShell command: get-service storagenode | select -Property RequiredServices I recommend to setup the dependency and delayed auto start for the storagenode service (from elevated PowerShell or cmd.exe): sc.exe config storagenode depend= dnscache start= delayed-auto