Does Pro version of LW require a renewal fee every six months? I have read in the forum that if you don't pay for the Pro version every six months you will loose it. I thought that it was a one time fee but it doesn't sound like it. Is it true you must pay every six months? Is it really worth it to pay over and over again, or is there really not much difference between the Pro version and the free version? Any advise would be greatly appreciated. Thanks