Content restrictions Limit adult websites is not working

Hi everyone,

I am trying to block a Macbook Pro from accessing adult websites.

I went to Settings --> Screen time --> Content & Privacy --> Content & Privacy restrictions: On --> Web Content --> Limit Adult Websites.

Then I additionally added a number of websites that I want blocked. I closed down the settings screen and tested one of the websites I blocked on purpose, and found out they are still accessible. I tried restarting my computer, restarting my browser, then I made a non-admin account and tried to see what websites I could access over there, and it was still possible to access adult content.

My laptop has MacOS Catalina installed and I work with a VPN. Also tried to switch off the VPN but this does not seem to matter. Does anybody know what I am doing wrong? Would really like to shield this laptop from accessing Adult content.

Any help is very welcome. Thank you in advance!

Best regards,

Daniel