Is it Tuesday?

Community event wont sync so that I can start tracking. Game's installed, profile's online and not hidden in any way. Everything's public. Attempting to Sync just takes a minute and then reloads the page unchanged (then can't sync again for an hour). Blasted cookies and cache in browser, disconnected and reconnected steam thru AWA. Anything else I can do?

Does Them Contained artifact (20% all arp gained) work? If so, does it work on single Arp gains like those from Twitch?