Negative BTC Balance Freewallet

Hi there, I seem to have a negative BTC balance in my freewallet - is this a glitch or am I misunderstanding the fees with respect to orders on the DEX? I also have 2 filled buy orders that still show up as pending orders. My wallet address is [1BQTX67WTj8h2cJjVVn6CkXh39XqYJzGd2] if you wanted to look at the tx activity. Thank you very much for the help and the continued community support.