Alert if unstable connection detected

[DenisTimofijuk]

I have been using this integration for some time now and sometimes I get strange historical charts. After investigation it seems that the connection is getting unstable and it is pulsing between 0 or actual values (see attached image for reference).
So I suggest to implement some kind of feature to track and identify if the connection is unstable and notify the user to take some action. For me it is enough to restart either the server or the device itself.
Notification would be useful as it would notify me earlier and allow me to avoid having ruined data for a long period of time.