I recently installed a Netgear Orbi mesh wifi network in my home to replace a 4 year old wifi router with extenders. The mesh network automatically chooses the best connection of 2.4 or 5 Ghz for each wifi device including our Samsung Galaxy smartphones. Because of this the phones are connected at 5 Ghz but the Ring Doorbell 2 is using 2.4 Ghz. This is obvious causing a mismatch with wifi connectivity between the Ring app running of the phones and the doorbell itself. There does not appear to be anyway to force the Samsung phones to switch to the 2.4 Ghz band when trying to activate Live View. The Netgear Orbi offers no option to choose between 2.4 and 5 Ghz bands per device. By the way, I do suspect that this problem may turn out to be a general mesh network issue regardless of the wifi network router vendor chosen.
I hope that Ring will quickly address this connectivity issue and publish a fix.