The certificate issue is weird since it's handled by Cloudflare and I can see a valid one.

Th fortinet one. I had a similar issue with a different ISP in the US. I am not sure what's triggering their firewalls/systems but one guess is that it's dumb and interpreting codeinput as something that has to do with hacking.

Tell me about it. I am now the owner of Lemmy.world 😆

I disabled all of Cloudflare "features" because it's wrong most of the time. I sent you a message, would be interested to see why this is happening.

Can you explain? Is the website down or you are unable to login?