Worked for me but it is not pro. How after oaying for pro do i get the beta to be pro?

Your Pro benefits need to be current. If your Pro benefits have expired (ie you're not eligible for free support or updates) then you'll have to use the basic version unless you buy Pro again.

If your Pro benefits are current, use your personal download link.
On the Pro download page, you'll see Pro Beta Releases. If you haven't bookmarked your personal download link, go back to the original email that you recieved from LimeWire, after buying Pro... that will have a link
And if you haven't saved that email, go here & enter the email address that you used to buy Pro: LimeWire PRO Lookup - Lime Wire