i have bought a lightroom 5 time but it can work just one, but i have to pay all of it, how i cancel 4 is not available
Are you wanting to remove LR4?
If so go to the Windows Control Panel (Add/Remove Programs) and choose LR4 and click to uninstall.
On Mac OSX go to Applications in Finder and drag LR4 to the trash.
Retrieving data ...