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what bot?
I never saw a bot.
and I have no idea what slack is.
is it on Steemit?

No, Slack is a chat program. You can google "What is Slack" and get some good answers. The link to their Slack is at the bottom of their website: https://byteball.org/ which is https://slack.byteball.org/

The chat bot is the thing you're interacting with within the wallet.

Good luck.