I don't think the game telling you that something is locked is the same thing as the game freezing up. Here is one comment from a player who talks about things getting unlocked:
Bingo examples are shown on the top left, any horizontal or vertical lines completely filled wins, diagonal lines in either direction wins, all four corners filled wins, and each level has a "special jackpot pattern" as shown that will earn you coins for winning. Some of the board cells have icons on them, that if filled, will earn you special items. Diamonds must be earned to unlock final battles, Quest Keys allow you to unlock side quests (side quests are similar to regular bingo, you play side by side with your opponent, 3 numbers are given at one time, the board has less cells to fill, and there are no letter categories, first to fill board wins a relic) Luck Tokens allow you to take a free spin of the lucky wheel to earn coins, and Treasure Chests give you extra Power-ups.
It sounds to me that something saying it is locked is part of the play mechanic and that you need to do something else in the game in order to unlock it. You might want to check and see if there is anything on the main menu that says "help," or words to that effect - sometimes these games have instructions that you can read, separate from a tutorial in the game.