I`m trying to access this site.

If using the VPN the site is working, if not the browser shows Certificate Revoked.

I scanned my computer and has no viruses. (Kaspersky and Malwarebytes' Anti-Malware)

Verified if time is good and it is.

I cleared all cookies and temporary files made by Opera with CCleaner.

Google is working on HTTPS.

I have the latest Opera at this time (v.40.0.2380.81)

What is wrong with it?