Yes, they started working again for me, too - about 2 weeks ago I think! This is great. Thanks for the update!

Having the same issues with my Lean testing project. I setup Slack integration for my LT project several weeks ago. I noticed it stopped working - new bugs reported were not posted as Slack messages. I tried to remove the Lean Testing-Slack integration and re-set it up, and I manage to connect the incoming-webhook but Slack posts are not created for any Lean Testing bug tracking activity.