App is stuck

I started adding accounts.  

Not sure if I was doing it too quick, but first this happened: https://puu.sh/Aw6tE/ef41580032.png

I lost the left side panel.

About a minute later, this happened: https://puu.sh/Aw6uu/8ed1aa0b15.png

I lost everything.

I closed the app and opened again, but the window is still blank.