I have just paid for the PRO version but it doesnt work. I have rebooted, uninstalled the free version and uninstalled the PRO version. Then I have reinstalled the PRO version..................... Zilch. Nothing is downloading yet the progress bar shows that I am getting something. Any ideas please? By the way hello to you all.

Do you mean that you're not seeing any search results, or that files won't download??
If you're not seeing any search results...
Is LW connected properly (all green/blue connection bars)? If LW is connected properly, try the fixes below.

1. In LW go tools > options > searching > basic & check whether the 'show license warning' box is ticked. If it does, untick it > Apply > ok...see if that makes any difference.

2. Problems with the search

3. Delete LW's preferences folder when LW's properly closed. See point 3 here & also point 2 if you've used older versions of LW in the past (there could be a folder in either location).
Fixes for LimeWire
This will change all of your settings within options, you'll have to go back through afterwards & reset things to the way you like them.

If LW's not connected, try the tips below & post back with your details if need be.
If LW Will Not Connect

Is there anyway that anyone can tell me if this is unlimited downloading once you pay or is that for so many songs a month or whatever? And I can't figure out how to make my own post on here......help please

There's no limit on how many files you can download

If you want to start a new thread, click on the blue link below & follow LOTR's advice.
How to create a New Thread

Thanks for your suggestions Birdy.Guess what........ it decided to work all on it's own after hours of hair pulling and frustration. God only knows why.