devices are sometime not responsive
Looking into the plugin page, I see they are online, but it seems there was no connection for almost a minute. waiting a little more and everything is fine. usually the counter in this page never goes beyond 15 seconds.
any clue?

![Screen Shot 2020-06-23 at 15 44 32](https://user-images.githubusercontent.com/1533993/85409958-2978c780-b56f-11ea-9bca-b64959d212ca.png)
