I have no idea why this is happening but it's quite possibly one of the most frustrating things for me. Having invested in this mesh system, and about to install two more x20's im worried this was a huge mistake. All the forums and complaints are the same. The Wi-Fi keeps cutting out, 3-4 times a day. When it does, all connectivity is lost, the led goes red and then it takes about 5 minutes to turn green before the Wi-Fi comes back. 
 

Has there been a fix for this yet? I was planning on adding two more x20's to the network, making it a total of 5 but I would rather return those, burn the 3 original x20's live streamed on YouTube, and then invest in a better company if they can't figure this out. 
 

Sincerely, a very frustrated customer.