Hi,
If your game crashes and you have to relaunch it couple of times - try clearing the app cache, go to settings -> all apps -> choose REC app -> storage and cache -> clear cache (this won't clear your save data and will help with the crashes.
As for the night ending too quickly, make sure you have a lot of stamina (simply go running) because your stamina is actually camera battery life during the night fun, so if you're low on stamina during the day, your night fun will end very quickly.
Hope this helps,
Cheers