Statuses are not showing for a channel when viewed in the Admin > Tags section of Marketo.
To view the statuses for a channel, follow these steps:
If you are unable to see statuses in the Edit Channel window, it may be due to the slight delay that can occur when Marketo is loading the values for a channel. If you leave the channel window open, the values should populate. The more statuses there are for a particular channel, the longer the delay can be before they populate.