I could not join a group panel discussion in US using Zoom. The error message said connection could not be made with a Zoom site ending with .us The meeting was organised by Coda a US based organisation. The Uk end was organised by a website called Eventbrite. I tried again using an I-Pad but got the same rejection withh error message PR_END_OF_FILE_ERROR

I should add that recently quite frequently when I start an online search on my Windows 10 PC a box appears at left end of search box stating   "Insecure" but this quickly disappears.