Join a Cocoon
If you just downloaded the app
First, make sure you download Cocoon for iOS and Android to get started. Once you have the app, you'll need to create an account before you can join or create a Cocoon. Complete this flow if you haven't already (shown below).
Important: Make sure you use your normal phone number when you sign up. Your phone number is used to match you with the Cocoons you've been invited to.
If your phone number has been invited to a Cocoon, you'll be asked to confirm whether you'd like to join it or not. You should see the name of the Cocoon, along with a list of current members. Tap on the "Join this Cocoon" button to accept your invite.
If you know you've been invited to a Cocoon, but you aren't asked to join it when you sign up, make sure the person who created the Cocoon, invited you using the same phone number you used to sign up. If you only have one phone number, this likely isn't an issue, but for people with multiple numbers sometimes this can cause confusion.
If you already have the app
If you already had Cocoon installed when you were added to a new Cocoon, you can find it by visiting the Cocoon switcher page. Tap on the menu button in the top left of the screen. This will take you to the Cocoon switcher, where you can navigate between the different Cocoons you're a member of, or create a new one