Very similar issue occurring. All was working fine till I first noticed yesterday Apr 4, 2020 that live view was not working while I am at home. Of course checked the wifi router, rebooted, and am getting the output I expected, 170 mbps. Other wifi equipment is working fine. However, when using either the ring app or rapid ring I get an error message saying I have a weak signal, and it won’t connect to live view. Now note, when I disconnect my phone from wifi and am on LTE, it works fine, connecting to live view right away. Turning on wifi and the annoying weak signal message is back.
I have cleared cache and data under both apps, uninstalled and reintalled both, cannot get wifi to work properly with live view. Recorded video appears to operate correctly.