How to upgrade from TouchPal Input V5 to TouchPal X

May 27, 2014
I'm wondering how to upgrade the stock TouchPal Input V5 on my MI3 to the TouchPal X that's available on Google Play. For some reason Google Play recognizes the stock V5 as the same thing and shows it as "Installed."
I don't like the V5 layout with the short spacebar. The TouchPal X has features that V5 doesn't either. I can't delete the V5 that's on my MI3 and disabling doesn't do anything. It's running on Version 5.1.7.... but the TouchPal website says that the latest version for Android is 5.5.5.

Can anyone help with this? Much appreciated!