2 Problems (license and import)

Hi guys, I have some problems.

1) I saved the library by exporting an xml file with playlists - now I returned them back and the color marks were passed through, although they are in the xml file (example of the tag Color = "0xFF0000">)
How do I get the color icons back in place? (in 4.5.0 version of RekordBox)
2) I Has RekordBox Version 4.5.0 at it was licensed, at first I had version 2.x.x (!activated with a key from xdj aero!), then it was updated to 3.x.x and then to 4.5.0. Now I'm in version 4.5.0 on a new computer trying to drive litsuha from 2.x.x and does not work. The question is - how to activate the old license, or where to get the key?