CLEAN : Solar Impulse II makes unscheduled landing in Japan (3)

The video discusses the challenges faced due to unexpected weather conditions affecting a flight plan to Hawaii. Initially, a window was simulated for the flight, but it closed, necessitating a search for a new opportunity. The app used for planning is performing well, and efforts continue to find suitable weather conditions.

What challenges were mentioned regarding the flight to Hawaii?

What was stated about the app's performance in relation to the flight planning?