I have tried to add the Butler power-up to my boards for over a month now, and I get the message that Trello is undergoing the process of acquiring Butler and they cannot take on new users. How long is this expected to take? I would REALLY like to try butler!! :)
In the meantime, if you have an urgent automation requirement I can help you with Trellinator which is a Google Apps Script library I wrote in order to replace Butler for my clients.
You can see a recent issue I resolved for someone else here:
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