I have been playing slots for several days, the total time in the game is about 12 hours, and I still can't get to the second level in the quest. Maybe I'm doing something wrong?
How much you have wagered so far? The main requirement to level up is by wagering certain amount for each level.
To be on 2nd level, you need 250 points. 1point = $1, so you need to wager at least $250 to be on the 2nd level.
It is not about how long you play, but how much you wager. If you have wagered more than $250 but you still cant get to the 2nd level, there must be something wrong with the system so better to contact them personally.