Thank you both. I haven't had one of these messages (using Opera here) so it seems like this error is different from person to person, which would suggest that it's a web browser or OS issue. I'll speak to our host to see if they know anything about it which could help.
Pegasus wrote:CEONSS.net HTTPS issue? TiA.
Bought one from GoDaddy, but i want to use a free one which should be ready soon before applying it to the forum
It would still be very useful if someone could give an exact date and time if this happens to you