Hey, make sure you're on the latest public version (0.05_ab) as any earlier version seems to have a bug where you can't buy enough cards to let you exit. Once you have that version, you can try that intro again with a fresh new game. If you choose to skip the intro and it doesn't work again, play the intro instead as that's the safer option though both options SHOULD work.
The game tasks you to buy 4x of the first Bronze packs so make sure you've done that too.