I hope all of you guys on AO3 are doing ok! I heard whats happening and I looked into the attack on your guy's site and here is what I found:
A claimed "Religious" group is DDoSing AO3 because they say it is "A site to which people only write about smut, LGBTQ, and other.
They say that they will stop if AO3 pays a ransom of 30,000 bitcoin or they will continue their attack.
Hopfully this issue gets resolved and you guys ca go back to writing your amazing story's in no time! Stay safe guys and lets be hopeful they don't hit us next.