Is it a $50 total balance or $50 in total deposits that unlocks all bonuses?
It is the current balance. Doesn't matter how you get it, deposit win it, referrals or whatever. The number will actually be less for most people as how much you play Hi-Lo, jackpots and buy lottery tickets is also factored in.
what bonuses? As of today I have USD 56 as my current balance, but haven't noticed any bonuses...