Xmr ReConnection Issue

Developer Experience
1

Hello,
I re-opened this Topic because the issue happened again but this time from server side.
Now all of my clients disconnects from XMR. I think server was anyhow offline for a minute and all xmr connections would be offline. But even server is online, XMR wont try to connect. But you close and open the xibo client app, XMR connects without problem.
I think this is important if client or server offline a minute, XMR not work again.
Here is screen from all of my clients (4)

  1. 14
  2. 31
  3. 38
  4. 46

You can see their last connection time almost same, the screenshots taken after 15minutes of this times.
But the client which open new, could connect, and the offline devices can connect after restart the app.

Thanks for your help
Michael.