The bots I've created in recently days cannot be published, due to the condition:
This feature isn't available until your bot has finished setting up.

BTW once I guessed I need to wait for some times for the "setting up", but after few hours not only there's nothing change for this condition, but after re-select the bot from Copilot Studio home, there's another error:
We ran into a problem creating your bot

and seems my bot cannot be accessed anymore.