Something like that. It's ridiculous. I could not use 1Password until the App Store came back up, which was pretty inconvenient. Tweetbot also had the same problem and the developer tweeted about the situation: https://twitter.com/tapbot_paul/status/664668084146339840 (and more tweets around that timeframe).
I found this tweet from the Tweetbot developers even more significant, there was no way they could upload a patched old version to the Mac App Store to fix it:
