Kano app for Mac doesn't remember login info

The Kano app for Mac requires that we log in again every time we open it. And every time my daughter completes a challenge in the Kano app for Mac, the app logs out abruptly, and we have to log back in again. It seems the app cannot remember our login info, and its very frustrating. Anyone have this issue?

edit: we are using the Motion Senior kit, on Mac OS 10.13.2 (17C88), using Kano app 1.0.9