RBS50 satellite keeps dropping a wired device (Fingbox) but other RBS50 satellite does not.

Thanks for the information.

if we say the RBS50 on which it drops off is "A" and the RBS50 on which it always works is "B", then I did the following:

I first had fingbox running on "A" and it drops off one or twice a day. So I moved fingbox to "B" and it did not drop once over a few days. I used the same network cable. So I then switched the satellites around, and placed "A" in the room of B and placed "B" in the room of "A" to fully replicate the scenario where the fingbox was back in the room where it did not work, but now connected to the satellite on which it had worked. (Hope this still makes sense!). It continues to work without any drops. So I concluded that the room / range from the router was not the issue, but instead must be the actual satellite device. I have not tried yet plugging it back into "A" whilst A is still in the room that "B" was in to see if it still drops the fingbox. I expect it will but will try to be sure. 

So I have a workaround now in that I have fingbox plugged in where I wanted it by swapping the satellites around. But i would like to understand if I could get Sat "A" to work properly in case I need to plug any other devices into it in future.

i did also change the network cable on fingbox before doing these experiments as fingbox suggested that could be the reason a network stops seeing it. Satellite "A" dropped the fingbox on the old and new cable. Sat "B" worked with both.

I will also research a bit more how Fing notifies. I will get the notification when I am out of the house if fingbox fails to see the internet. Hence why I thought it was a notification coming direct from the company themselves. In fact, thinking about it, our internet properly failed last week (global outage in UK) and Fing notified my mobile with a message saying:

Resolved: Major outage

Outage of Virgin Media resolved after 15 mi

This was the first time I got a message like this. It made me realise they are fully reviewing all internet providers where their fingbox devices are installed. 

So I assumed that the notification came direct from fingbox servers to the app on the phone as this was very specific info to UK issue at a specific point in time. But I am guessing on this part and so will research it more to be sure.