This type of application requires a physical device to be tested against errors and usually to see its functionality. Since I lack that device, the only thing that I can recommend is its reinstallation along with device checking.
Also, since the company is still in the business and makes these products, check the forums and ask the question there as well because someone from the developers will try to help you with this issue.
The Motorola 123Scan2 might work just fine, but requires additional configuration to prevent issues like these.