Gambling Wages (and most RTG casinos) require you to make a deposit between free chips. I’ll be the first to admit that this isn’t always stated in an obvious way, but it is in their terms and conditions.
They also generally carry a maximum cashout on their free chips of 1x the bonus amount. So it wouldn’t have been likely that your $800 withdrawal would have ever been approved.
Based on that screen shot it also looks there there is another page of history missing, so if you had redeemed more free chips on the second page that would also prevent you from cashing out.
And on top of that, why did you redeem another free chip on 5/2 after they canceled your withdrawal on 4/29? Most of us would have been too concerned about the canceled cashout to risk redeeming yet another free chip.