Hi Mark,
Yes you have received casino race reward, casino cashback, welcome deposit, and bonus payout.
Bonus payout; If you, for example, activate your welcome bonus/reload bonus by depositing $100, you will receive a bonus of $100 to your bonus account. To turn the bonus money into real money you need to wager the deposited amount 20x (Total wager of $2,000). You can make as many deposits as you want during your bonus qualification.
Your bonus money will be paid out in 10% increments, if you have wagered $200 you will receive a bonus payout of $10 to your cash account. ( & In your case you have got your first bonus payout of $5 from your $50 deposit with the 100% match bonus - which is still active.)
No worries. Let me know should you need anything else or if you have any other questions, and I'll gladly help out.
Update: I've just seen that you were also rewarded yet another total wagering free casino race reward to your account a little earlier on today too.
Cheers!
Lucas