I had originally purchased a license for the mac version. I subsequently purchased a license for the windows version. Today I purchased a "convert to cross-platform license which I thought would allow me to enable audirvana on another window machine so I would have one mac and two windows installations. When I entered the license key I got “There are too many installs for your license. Uninstall Audirvana on one of your computers before trying again”
Maybe your license is the same as mine
My license works on both Mac and Windows, but can only be used on one system at a time.
If it is installed on the Mac, it must first be removed in order to install on Windows.