Appointments+ Cancel Button doesn't work and changing text in confirm

The cancel button doesn't work -- I get this error in the console:
app-confirmation.js?ver=4.4.2:34 Uncaught ReferenceError: app_cancel_location is not defined

Also, I tried changing the word "Price" in the confirmation area using the language file, as I found in a support article, but it still says "price." I need it to say "Commission."