Slack action not available

[joshsp]

This is how my action hub looks:

I am able to enable and edit settings in Slack Attachment (API Token), but I cannot enable or change settings for just the Slack action.

It's just empty. It's like this in both of our Looker instances. I have been able to set up other action without any issues, including the other Slack option. I originally tried this unavailable one and couldn't solve it so we did the API token method instead, so it's not that one precludes the other.

Why isn't the Slack action populating settings or able to be enabled? 

Thanks