The prompt to "place order"is below view and I cannot complete or close the program. MacBook Pro

I am having the same issue here. Try to file my returns at this last minute... Someone please help! 

I miminized my bar at the bottom by going to 'system preferences' and 'dock' then changing the size.  I was then able to visualize the processing button 🙂 . I hope it is successful for you.