Ah ok, thats making more sense now.
Yeah the note only gets the message from the tva server.
If it cant connect to it then it pops up that message (its hard coded in that way)
It doesnt do anything other than that.
What might be happening is that your dropping your internet connection, or connectivity, and none of the addons are getting through.
Especially if your using wifi.
Thats the only way that the note and/or other addons are linked

Even within indigo itself, if the note doesnt work (cant connect to the message file on the server) it doesnt effect any other parts of indigo.
This is because different parts of indigo connect to different tva servers (or other servers).
Just like the addons connect to different servers than those of TVA.
The only thing that they all have in common is your internet connection.
Your modem/router controls your internet connection not Indigo, any addon, or even kodi.
They all connect separately and independently from each other.
So that means if one server goes down it dosent effect any other connection or connectivity.
But if your internet goes down, or if your device/computer losses its connection, then none of them will work.
Its just that indigo (the note) will tell you if it cant connect to its own server, or read the message file thats on it.
Edit
if your using wifi, try moving your router or the device so that they are closer together.
You might have a weak wifi signal