Welcome to Codidact Meta!
Codidact Meta is the meta-discussion site for the Codidact community network and the Codidact software. Whether you have bug reports or feature requests, support questions or rule discussions that touch the whole network – this is the site for you.
collab.codidact.org is serving an expired TLS certificate for HTTPS
I noticed that https://collab.codidact.org/ is serving an expired certificate; it has a validity not-after of Aug 9 2021 21:15 UTC.
Even though it lists a bunch of other Codidact sites as Subject Alt Names, trying a few, collab is the only one that is having that problem. Another difference is that at least the certificate for Power Users is issued by Cloudflare as the CA, while the one for Collab is issued by Let's Encrypt. (The one I get for Collab is serial number 03:75:9A:4F:44:FE:BF:26:90:0C:82:99:11:26:08:6F:FF:EA, fingerprint SHA-256 6D:E5:17:DB:CF:94:0F:1D:BD:08:CA:6A:ED:CD:B2:FB:9F:BC:2F:93:5A:9F:3F:6F:7D:30:1D:7D:10:9B:80:D5.)
Whatever is up with Collab's certificate, while this strictly speaking isn't a bug, it's definitely a case of "something is wrong".