subway surfer won't delete from our ipad mini. Please help

Have you tried?

Settings>General>Usage>Show all aps

and delete it there

Hook the iPad up to iTunes on the computer you sync with and click on the Apps tab in the Device Profile screens to the right. The app should show there. Click on the "Remove" button. It will change to Will Remove. Click on Apply or Sync at the bottom to sync.

Cheers,

GB