There is nothing wrong with your result. The example is somehow in error. Maybe made before a bug was fixed.
The example shows an approaching target. But like your results, it is infact a receding target. Bearing differences of 7 between B1 and B2, and total bearing difference B3-B1 of 13 indicate an AOB of 117 at B1 and 130 at B3. Bearings are contracting, meaning it is going to the horizon. Your earned your dolphins.
When I click on the thumbnails it opens as a new tab in my browser showing the thumbnail again. When I close it, the original tab shows your images in a larger, properly readable preview screen. (in Chrome)