If it were up to me I'd use something else but I'm stuck trying to sort this out. There is no support. I have the option to create a ticket but it won't actually do anything. The instructions for migration don't work, there seems to be no interest from Atlassian in actually helping the people who give them money.
I've tried to read https://www.atlassian.com/migration/plan/cloud-guide#setup-cloud but like most of their documentation it goes round in circles - the pages are full of links to other pages which often lead you back where you started without explaining anything. It's slowly draining my will to live.
Are there any decent notes on how to do this?