Hi Marco, I think that Chrome has recently made changes that any use of http:// instead of https:// gives that kind of warning message. So that part when using http:// is probably normal. The solution though should be to use https:// which I just added support for a little while ago.

But I don't know why you're getting that same warning when using https:// , over here it shows as secure with Firefox or Safari and it even says there on your screenshot that the certificate is valid.

Maybe try clearing cookies? There's a link here for that: https://moi3d.com/forum/logon.php

- Michael