Hello there fellow mods

I have reasently bought the game minecraft dungeons and then downloaded it but all it says in the launcher is "buy now" 

When i searched for it a mod didnt reply with anything other than "it should be fixed now for you" 

so i have no idea what to do about it  

I used the windows 7/8/10 version but it still doesnt work idk what to do 

(sorry for my bad english its not my first language)