The fix for this is now live and people can now successfully subscribe to receive status updates via Slack again. Thanks for sticking with us while we fixed that.
We have found a permanent fix to the slack issue and hope to have it resolved shortly. I will keep you posted as things develop. Thank you for your patience.
With help from our most recent trial customer, We are aware of a problem preventing some status page slack subscriptions from working.
More news to follow as we learn about the problem.