Problem: When connecting to a pfsense firewall webConfigurator (admin page) configured to use Let’s Encrypt certificates you find the certificate is expired.
Cause: The webConfigurator site was not restared when the certificate was renewed
Resolution: Configure the webConfigurator site to auto-restarted when the certificate is updated
Goto Services => Acme Certificates
Select to edit the cert you are using for the webConfigurator
At the bottom of the Certificates tab in the Actions list section click Add
Method: Shell Command
To view where each certificate is being used Goto System => Cert. Manager => Certificates