f1tcdn.net cert expired

[markc]

Sorry not sure if this is posted in the right place, but getting cert expired error for f1tcdn.net. As the CSS isn't loading (because it comes from f1tcdn.net) I can't really navigate the site as I'm used to it being!!

Anyway message when visiting f1tcdn.net in chrome:
This server could not prove that it is f1tcdn.net; its security certificate expired in the last day. This may be caused by a misconfiguration or an attacker intercepting your connection. Your computer's clock is currently set to Thursday, 12 March 2026. Does that look right? If not, you should correct your system's clock and then refresh this page.

[markc]

From browser console:

GET https://f1tcdn.net/assets/css/site.min.css?rv=28
net::ERR_CERT_DATE_INVALID

GET https://f1tcdn.net/forum/styles/f1techn ... ersion=170 net::ERR_CERT_DATE_INVALID

GET https://f1tcdn.net/assets/ui/jquery-ui- ... .css?rv=28 net::ERR_CERT_DATE_INVALID

GET https://f1tcdn.net/images/logo45-2.png net::ERR_CERT_DATE_INVALID

GET https://f1tcdn.net/forum/styles/f1techn ... avatar.gif net::ERR_CERT_DATE_INVALID

GET https://f1tcdn.net/forum/assets/javascr ... ersion=170 net::ERR_CERT_DATE_INVALID

etc...

Cert details I'm seeing:

Common Name (CN) f1tcdn.net
Organisation (O) <Not part of certificate>
Organisational Unit (OU) <Not part of certificate>
Common Name (CN) R12
Organisation (O) Let's Encrypt
Organisational Unit (OU) <Not part of certificate>
Issued On Friday, 12 December 2025 at 06:34:23
Expires On Thursday, 12 March 2026 at 06:34:22