Patch 1.0.3 is now live. This small patch addresses a minor technical issue that was preventing certain players from accessing offline play. For additional information, check out the official patch notes below.

see the detail

Could this "Minor Technical Issue" be Chat Channels...

nah.. I wish

And it's preventing me from playing. My Blizzard Downloader isn't downloading. It thinks there aren't any problems. D:

How would I go and report that I've beat all the challenges with bronze, and I still haven't received an achievement? Why is it that this only happens to some people?

Maybe Bronze don't receive an achievement? After all, Bronze really isn't hard at all to reach. ;o

Yeah, I wish too...

Try 'StarCraft II - Repair'. I had some problems about patches and the game not allowing me to play. I tried asking a question about in the StarCraft II forum but was never answered. I had to address my own problem. And it worked.

Running as admin may help as well.