Starting some time yesterday, I have had problems connecting to IM webpages, such as https://www.imagemagick.org/script/escape.php . Firefox says:
A workaround is to remove "www." from the front of URLS, eg https://imagemagick.org/script/escape.php works fine.Websites prove their identity via certificates. Firefox does not trust this site because it uses a certificate that is not valid for www.imagemagick.org. The certificate is only valid for imagemagick.org.
Error code: SSL_ERROR_BAD_CERT_DOMAIN