Let’s Encrypt certificates are valid for 90 days. The certificate your site is using expired a few hours ago.
Can you answer as many of the questions below as possible?
Who set up Let’s Encrypt for your site? What did they do?
It’s common to automatically renew certificates about every 60 days. And you actually do have new certificates, but your site isn’t using them for some reason.
Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
My web server is (include version):
The operating system my web server runs on is (include version):
My hosting provider, if applicable, is:
I can login to a root shell on my machine (yes or no, or I don’t know):
I’m using a control panel to manage my site (no, or provide the name and version of the control panel):
The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot):