Moving this discussion to the Adobe Digital Editions forum.
Shebah it does not appear that your LeVision eReader is supported with Adobe Digitial Editions. Please see http://blogs.adobe.com/digitalpublishing/supported-devices for a list of supported devices.
Since it's not a supported device, suggested you to ask for help from the device customer support. You can also check the device website wriiten in the manual. I guess you may find it from (http://www.migear.biz/pages/LeVision-eReader/) but not sure if it's official. Good luck! -Derek