The ebuild currently has LICENSE="as-is" which most likely is wrong. - No license is included in the package's tarball. - I cannot find any license information on the HOMEPAGE. Can you please ask upstream for clarification under with terms this package can be distributed?
Mail sent.
After 1 1/2 month no reply from source owner Added to ebuild RESTRICT="mirror bindist" LICENSE="all-rights-reserved" This should this fixed for now