Secure Connection Failed - Argh!

[benparker]

So I've ditched my 3 Sim and gone with Voxi (5x better speeds) who use Vodafone network. Now there seems to be a bunch of websites I cant access, it says Secure Connection Failed. One of the websites for example is https://1fichier.com/

This never happened with 3. Is there a way to fix this mess?

 

[benparker]

Already have adult content turned off. Even websites like vanish vpn don't work. Guess I'll have to call them.