Thanks for using our module and thanks for your feedback.
1. When a buyer buy a product with paypal the order status is "payment remotly accepted". Account history doesn't append order with this status in its list. It seems that your module doesn't support this new paypal status but only "payment accepted".
Currently the module only take "Payment Accepted" as valid order. We will add "payment remotely accepted" to as valid. It will fixed shortly. But so far, you are only customer who uses "payment remotely accepted".
2. When I pay commission to seller the balance isn't changed.
Please make sure that IPN (Instant Payment Notification) is enabled at seller Paypal account, so that Paypal can post back the payment. IPN does not need to point to your store, but it must be enabled.