10:06 PM PST
We’re happy to report that you should now be able to create channels that contain a hyphen or underscore in the name without any trouble! We apologize for the disruption.
4:01 PM PST
We are still looking into channel name issues with channel creation but we hope we are nearing a fix. Thanks for your patience!
12:21 PM PST
We're seeing report of users having intermittent trouble with creating channel names. We're investigating and will follow up when we know more.
11:46 AM PST