Tigerdroppings is a malicious site? I get a Privacy Error message.

I tried logging on to TD using Opera's VPN and received this popup error. Normally, I use Firefox or Brave browsers but thought I'd use Opera's built-in VPN just for $hits & Giggles.

My other option was to login with another browser, copy & paste the address of this page and behold!..it lets me in.

So, is TD a malicious site or does Opera have a bug in its programming?

"tigerdroppings.com normally uses encryption to protect your information. When Opera tried to connect to tigerdroppings.com this time, the website sent back unusual and incorrect credentials. This may happen when an attacker is trying to pretend to be tigerdroppings.com, or a Wi-Fi sign-in screen has interrupted the connection. Your information is still secure because Opera stopped the connection before any data was exchanged.

You cannot visit tigerdroppings.com right now because the website uses HSTS. Network errors and attacks are usually temporary, so this page will probably work later."