The Launch Button is gone on instant action! Help!

[dsaf]

I launched up SWBF2, and i feel like i have a resolution sort of problem

The screen is like small.

Because it is small when i got to instant action, the launch button isn't there.

i tried to reinstall it but it didn't work.

This means i can't play star wars battlefront 2, Help!

I have no idea how to fix this. 

Can someone please help me!