On my existing website, the error message I receive is:
Websites prove their identity via certificates, which are valid for a set time period. The certificate expired on 11/6/2025. Error code: SEC_ERROR_EXPIRED_CERTIFICATE
Since that’s one of the free subdomain options, iFastNet will have to renew the wildcard certificate themselves.
This is actually normal for InfinityFree’s Softaculous installation and would say this regardless of if there’s a valid SSL certificate or not. You’ll want to proceed with the installation anyway, and then change the URL to HTTPS after WordPress is set up.