Apologizes for the lost data. This was not intended! The app stores data using local storage which is bound to the domain. When we updated the app the file:// protocol stopped working properly due to security issues and this was changed to ionic:// protocol. As a result, the data is not found.
I apologize for the inconvenience. If you use the cloud sync you can just login and it should restore all your sites.
In regard to the basic auth not working, I will investigate and reply back ASAP.
Thank you for your understanding!