This issue was fixed in Version 1.0.3.
We recently became aware of a problem with new accounts not being able to create routes, marks, or other objects right away. The symptom is that you are able to make a route, but when you finish (by tapping on the last waypoint), the route disappears.
We are working on a solution and will update the app as soon as possible. This problem only happens the first time you use Coastal Explorer and need to create an account. Until we get this fixed, you can force close Coastal Explorer and restart it in order to create navigation objects. You should only have to do that once.