I'm getting the following error on firefox: Websites prove their identity via certificates. Firefox does not trust this site because it uses a certificate that is not valid for nuttx.org. The certificate is only valid for the following names: shortener.secureserver.net, www.shortener.secureserver.net Error code: SSL_ERROR_BAD_CERT_DOMAIN Note that this does not happen for nuttx.apache.org.
This has happened before. I don't see the problem this morning (also using Firefox).
securesever.net is GoDaddy. nuttx.org is not a website. The URL is parked at GoDaddy and currently just re-directs to nuttx.apache.org. This is probably with GoDaddy itself, so I don't think there is anything that can be done except wait for them to fix their certificate (which apparently they have).