I can't play with another account

[maxtro79MEX]

I'm living in another country for 6 months. For this, I created another account to purchase games. No problems with that. I shared the two accounts to play from my main account to the games I bought with the another account. The problem comes with this game. I bought 3 games, but when I open my main account, only appears 2 games to play. I mean, I have all the games I bought from my main account and 2 of 3 games from my secondary account.
I don't know what happens.

PD: I installed the game and now it appears on the main account but instead of the button "play", it appears the button "buy". With the other 2 games there's no problem.