GinnyN is right (it's my
second post this week that starts that way!).
It is a problem that has happened to other people and Telltale can solve it.
I'd advise that you open a ticket by e-mailing
support@telltalegames.com, though.
GinnyN is also right about the poster.
Every once in a while, someone from Telltale (Bonnie, last time, if I remember correctly) will take some posters to Steve Purcell for him to sign.