I don't think it's Ddos.. As Cloudflare describes it
-snip-
Maybe some miss-configuration theymos did while setting up the local language thingy? It's still very bad for me. I can barely access the website and takes about 10-20 reloads to open a page.
More like a DDoS (or at least something along with what @mdayonliner said). According to
this page, the error 502 and 504 (what I'm getting all the time) means that the back-end servers are not communicating correctly.
"2. The server at the origin is overloaded or unreachable at the time the request was made. The could be due to the
server crashing, traffic spikes, or lack of connectivity to the server."
And this is not the first time this happens. The last time it was also a DDoS attack.