What am I supposed to be doing?

Hint 1 of 7:

Do your reading and read the materials included with the game.

Hint 2 of 7:

You SHOULD receive a check in the mail.

Hint 3 of 7:

But, of course, it got delivered to the wrong place.

Hint 4 of 7:

Your current job is to find where on the street your mail landed.

Hint 5 of 7:

Also, you should check each of the stickers on the mail, and write them down
in the order that you collected them.

Hint 6 of 7:

Once you do, you'll need to withdraw some money.