I cannot comment the log because I don't know the script, but the equity is directly received from the broker API, so if it's wrong, your broker stole your money. But I think you probably compared different account figures. IB has a lot of different numbers for describing your account state, and what Zorro displays is the "net liquidation value".

If still in doubt, you can subscribe a support ticket and Support will check your script and account and explain the numbers.