How long ago did you buy Pro & how much did you pay?

Providing that you downloaded from the official site Official Website & Free Download - Lime Wire, paid LimeWireLLC & your Pro benefits are still current you should be able to download Pro. Try all email addresses that you've used over the past year

Email addresses stay in LW's database while the user's Pro benefits are current.

If your Pro benefits have expired, or if you paid a scam site for Pro then you won't be able to download a new version of from the official site.