The connection is not secure

PeerTube
1

A notice appears when the site https://gorf.tube/ loads:

The connection is not secure
Attackers may try to steal your data from gorf.tube (e.g. passwords, messages or bank card numbers). Read more…
NET::ERR_CERT_DATE_INVALID

How to solve this problem?

2

The https certificate is oudated.
You can contact gorf.tube admins using this form: https://gorf.tube/about/contact (just tell your browser to ignore the error, there is no risk for you), and tell them to update their certificates.