Open the game Settings (gear icon) and scroll down to find the option for Number of Suits. This lets you choose how many different suits you'd like to play with.

Typically a 1-suit deal is more relaxing while a 4-suit deal is the most challenging that we offer!

Are you not able to locate this Setting? You may need to scroll down to reveal the option! (See image below) This can be done by holding your finger down anywhere on the Settings page and then scrolling up toward the top of the screen.