According to Feedly’s blog post regarding the attack the people behind the DDoS were demanding money in order to make it stop, which would allow Feedly to come back online.
The first update about the attack came on Feedly’s blog around 5 a.m. EST:
2:04am PST – Criminals are attacking feedly with a distributed denial of service attack (DDoS). The attacker is trying to extort us money to make it stop. We refused to give in and are working with our network providers to mitigate the attack as best as we can.
We are working in parallel with other victims of the same group and with law enforcement.
We want to apologize for the inconvenience. Please know that you data is safe and you will be able to re-access your feedly as soon as the attack is neutralized.
We will update this blog post as soon as we have more information.
/Edwin and Seb
About 4 1/2 hours later they updated the blog again to let users know that they were still working on getting Feedly back online and to assure them that none of their data has been lost.
6:25am PST – We’re making some changes to our infrastructure that will allow us to bring feedly back online. However, these things take some time to put into place and it may still be a few more hours before service is restored. Thank you so much for your patience and for sticking with us. Remember, none of your data was compromised or lost in this attack.
As of 2 p.m. EST the site is still down giving the above error message when trying to connect.