There is no difference in the installer for Xeams Community and Enterprise Edition. It will run as if you have purchased the Enterprise Edition for the first 30 days. It will then get converted to Community Edition unless a license is purchased.
I have exactly the same problem, it has changed to community edition even though I only have three active users although Xeams says "14136 of Unlimited" (wtf!!!) and I've been hit with a spam attack too, not a happy hector this morning :-(
