That version of Audacity is obsolete. Please quit it and trash it then get the latest “Audacity 2.0.5 (.dmg file)” from: Audacity ® | Download for Mac OS . Follow Installation: Do NOT run Audacity from the DMG!!!! to the letter then you will install 2.0.5 correctly.
Audacity does not provide support by e-mail. If you sent the e-mails to the device manufacturer it is highly unlikely they will reply (Audacity does not make the device).
Launch 2.0.5 with the USB device connected and recognised by the Mac.
Try these steps here if you need help: Missing features - Audacity Support .
Audacity does not provide the manual for your device, that will be written by the device manufacturer.
Use the latest 2.0.5, then use the Manual at Help > Manual (in web browser). The Help menu is top right of the Audacity screen. You can also read the Manual online. Here is a page that should help you: Audacity Manual .
Gale