The last update has caused numerous problems with the app resulting in it crashing often. Try to change from kilometer to miles and each time I open the app its set to kilometers again. Try to use the show my current location option and every time it crashes. Cant use it. This app was no doubt a 5 until the last update. Talked to the developer and they are in the process of fixing the issue. Once its corrected Id highly recommend.
LA351977 about Best Route Optimizer Pro