Official Firo Electrumx servers are getting a certificate refresh. If you are unable to connect to any of these servers using Electrum Firo, delete the certs directory in Electrum Firo’s data directory.
The default data directory for Electrum Firo are:
Windows: C:\Users\YOURUSERNAME\AppData\Roaming\Electrum-FIRO
Linux: ~/.electrum-firo
MacOS: ~/.electrum-firo