Effective immediately, I'm shutting steamnews down. It was flakey and annoying, and I never really intended for it to become as popular as it did, and even I don't use it anymore.
Valve secretly snuck in RSS support at some point over the years, and haven't told anyone about it, so you can just use them instead. You can get an RSS feed for your game via http://steamcommunity.com/games/<gameid>/rss/, where <gameid> is either the integer ID, e.g. 578080 for pubg, or the name of the game, e.g. blackwake. Please don't email me about this.