Online Casino Winnings

So I have a question about what to expect come tax time.  Since April I've played an online casino app (Acorn Casino) and have won some money.  You purchase coins to spin with (equal to the dollar amount to pay) and use that to bet/spin during the games.  If you don't lose it and have won, you can redeem the winnings.  They then pay out to PayPal. I normally only over deposit $5-$10 at a time, so the amount I end up winning/redeeming when I play is normally under $100 if I don't just lose it.  There are a couple instances where I've won like $120, but never over $600 in a single game.  Over the past 4-5 Months I've redeemed approx $4000 total, unsure of the actual amount I put in.  I'm wondering if I'll end up getting a W2-G from the casino (unsure if they only send them out if single winning is over $600, or cumulative over time is over that amount?) Or, will I just have to wait for the 1099K from PayPal which lists the deposits?