bonus funds used before real balance and now withdraw is blocked

So I got a match bonus, made sure to read the T&Cs, but when I started playing blackjack it took the bonus funds first instead of my real money. Thought that was weird but kept going since I was on a little heater. Hit the wager target, but now withdrawal’s blocked and support says it’s because the bonus was wagered before the real balance. Anyone else run into this? I figured your own cash would be used up first. Wondering if it’s just this place or something I missed.