If your account is linked to Facebook, you'll be able to invite your friends by going to Menu > Friends and searching in the search bar. Once you tap on their name and access their profile, you'll find the "Play" option that will allow you to invite them to a new game in the classic mode.
You'll also be able to do it by going to Menu > Facebook > Invite Friends.
Remember that you can also invite friends who are not in the game via a link through different social applications. To do this, follow the steps below:
- Tap on the "Send link" button you'll find at the bottom left of your screen, next to your ongoing games.
- Once you do this, different social apps you can use to invite your friend to the game will be displayed.
- Once your friend receives and accepts the invitation, they will appear as a friend available to play every time you want to start a new game.
To get more information on how to link your account to the social network, we suggest you visit the article How can I link/unlink a Facebook profile to my account?