Missing Shares from stock split


XPO had a stock split that was 1:1 for their new spin off company GXO. I should have received my GXO shares in addition to my existing XPO shares but never did and the change in price of XPO triggered a trailing stop loss so that cost basis was never adjusted on the split either. Due to this I’m missing gains in my account along with close to 7k dollars worth of GXO shares in my live trading account. Anyone have a resolution for this?

Paper or Live Tradng?
Live trading API.