hi why is i cant sell any item in this game?

Yesterday I bought "Nekopara OVA Extra" video in Steam, but it's unable to play. The steam video player shows the following message: "This video requires a license to play and is currently unable to retrieve the license. This may be due to temporary network conditions. To try again, please replay the video." I replayed the video many times but got the same result. I googled and found some people have this problem, too. I also checked Steam FAQ, follow FAQ to restart my Steam client, but it's still in vai...

I have buy this videos, why want license ???? how fix ( network is good )???? This video requires a license to play and is currently unable to retrieve the license. This may be due to temporary network conditions. To try again, please replay the video.

hi i want Azuki trading card.. if you have say your prize

They no longer can be sold so I guess they are rare Add me or send a offer