u/Even-Specific8578

hey guys so i'm trying to use afterpay on ebay , it says i have 600$ "available to use" on afterpay which I have used before on a 270$ order from target but im really confused because it says I have insufficient funds when i try to pay it lets me make the one time card for ebay but when i try to pay it with the afterpay card it says insufficient funds my bank account literally has enough funds for it , i don't know if you guys experienced this but if you can give me advice it would mean a lot as i'm trying to buy these for someone's birthday gift , the total cost was 336$ and i put 338$ for estimated price and i have 500$ in my bank account and first time payment is only 85$ , why does it say insufficient?