App crashes

I have an iPhone 6 Plus and I am having an issue with the app crashing after a few mins of use. It crashes when I try and scroll up or down the map looking at areas of concern for navigation. After about a min of doing that the app just crashes and closes and takes me back to my iPhone home screen. This didnt happen on the previous version only the new updated version.

Blake Sellers about Boating US&Canada, v9.3