Hi Adam,
last weekend I played a little bit with the Android Tablet I have mounted on the wall; as it is not permanently connected to power, battery can be drained very quickly.
So I rooted the device, I disabled a lot of services (almost all, Google Play, Wallet, Updates and so on) and since then, sometimes (very rarely) I get "There was a problem to connect to Indigo Server".
I see the error only when I wake the devices from sleep, never seen when using it but I was it not so often.
But when it happens, device is working without any problem, control page is updated normally.
Bye,
Marco
PS: I have sent you an e-mail last weekend, did you get it?
Thanks
Marco