Hi, that sounds like the 'skip intro' bug. I suggest either updating the game to Version 0.05B_e which fixes that bug if you haven't already or start again on the version you have but play the intro this time. Sorry about that.
Yep, that would be it. I though you had to buy a x4 pack, which the game does not let you buy despite having the money. Before going inside the menu, you have 500$ which means you might assume you will not have enough for 4 packs of x3. This is why I did not think this is what the game was asking. Maybe you should make it so the cost shows "Free" instead for the first 4 packs required for the tutorial? Maybe even with a indicator going down each time you "purchase" one until it reaches 4?