Thanks for the quick reply. Issues:
1) A few weeks and a few updates ago, Alerts just stopped working for several of my cameras. Checking setting by setting, some had changed without intervention from me. No-one else has access. 2 examples: One camera inexplicable had zones/hot spots turned on. Turned off and now Alerts work again. My garage camera is not alerting at all. Never had a problem with it.
2) One of my cameras shows in the Console as "No Signal". It is accessible as always from my Android cell phone with IP Cam Viewer.
Any thoughts? All regular diagnosis has been done. IPs checked, logins and passwords verified, etc.
Don