Oh, this is simple! :)

First, tap on the settings button (the gear icon) on the right upper corner.

Then simply select region and you'll see a dropdown with all language options that the game is available in.
Tap that button and select the language that fits you better and finally click on " Confirm"!

The game will reload and your new language should be set! :)

If you have any issues to do this, please, check our article " How to contact us " and send us a report!