I doubt LimeWire came with your iMac. And there is no 'trial' version. There is a Basic & a Pro version. The differences are only subtle.

Often when upgrading to Pro it's wise to delete the LW preferences, however with LW 5 you need to be careful how you do this because the download preferences are now stored within the main LW preferences folder; see Deleting LW Preferences folder in OSX

Queued = your LW is too busy.
Queued, Connecting, Need More Sources, are terms LW 5 does not use. These are terms LW 4 uses. Sounds to me like you did not purchase the Official LW Pro but instead went to a scam site. Perhaps that's why your original version was called a Trial version.

This is the Official LW site: Official Website & Free Download - Lime Wire