Hi,
I'm an admin for our server based JIRA install and we're using some plugins that only appear to have documentation on urls like softwareplant.atlassian.net for example. In order to comment on those or get answers, it's saying I have to have an Atlassian Cloud account but that doesn't make sense to me since the plugin is the server version. Also, I am unable to log into that Atlassian Cloud account with my Atlassian admin account (the one that purchased the software) and the only recourse seems to be, if I don't already have a "Cloud" account, is to contact myself (the admin). I'm sorry if this seems amature, we are really new, and this is a pretty embarrassing problem to have. We love documentation, so solving it might help us bother you all much less. 
Thanks