Firefox is reporting that vemo has an invalid certificate and will not let me load any videos
Chrom will play some videos
Yes I have the newest versions
The message is
Your connection is not secure
The owner of player.vimeo.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.
This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox only connect to it securely. As a result, it is not possible to add an exception for this certificate.
It sounds like you might be behind some kind of network appliance that is trying to intercept/snoop on HTTPS connections, which in practice means your browser does not see the correct server certificate. HTTPS strict transport security does not allow this. Or the vimeo SSL certificate is simply no longer trusted for some other reason.