RS-232 - Bluetooth

Hello everyone, I need some help, I have a barcode reader with usb interface, but I modify barcode reader with configuration barcode, now it is working usb com port emulation mode.. I bought shield link below, But I didn't find how to work this shield, Please help, I connected barcode reader usb cable with this shield (+5v and ground external supply- data+ to rx shield, data- to tx shield) I want it connects and send barcode string to Arduino with my ble shield link below, Please help this is my final exam :(

Anybody help ? :(