[Major]

UPDATE: If it's any consolation, I did find a great workaround - the Puffin browser! While I couldn't get the Hacker's Keyboard to work with either Opera (my default/preferred browser) or Puffin, I decided to try Puffin's built-in game controller, and that was what finally worked. I downloaded it in the first place so I could play Flash games. It's an excellent tool and I love it!