Why are all the Stories on Fanfiction.net consider fraudulent and blocked.

I can access Fanfiction.net perfectly fine but when I clicked on a fanfiction itself my page is blocked and a message appears on the page saying "Fraudulent Web Page Blocked".

 

I was fine this morning I went on it and never really had any problems with it for years now. If I do a full report on the site now, it is rated safe according to Norton Safe Web but the pages are still blocked. So, I don't understand is why is the site block in the first place?