I found Scananything to be very finicky to set up initially. I actually wondered if something wasn't working correctly. As mentioned above, it needs to be properly oriented in relation to the X and Y axis. It is also very picky on lighting. Glare from shop lighting can be an issue. I use a SuperEyes B005 camera, which has an on-board LED light. I plan on building an LED "ring" light to fit around the camera, to evenly light all areas below the lens. Finding the correct settings for lighting, servo gain, and contrast can be a bit tricky. I found the best way to "see" what the program is seeing is to use the mixed camera/processor view mode. I was getting really frustrated trying to get it to work. Once I stumbled across a good setup for my situation, I was able to play with individual settings to make it work. Now I love it.
Here's a quick setup video from YouTube:
https://youtu.be/9Wlb6wgCgbY