On the Home Screen you can see that new messages have arrived.
Open the "Messaging" Cube and open the request to become a friend.
- In the message, click on the "Open" button.
- Click the "Accept Invitation" button,
- and then the "Accept" button.
- From now on, you can see this person in the "Contacts" Cube.
The person you have added as a friend can also see you on his friends list in his "Contacts" Cube.
You can now send messages to each other in Cubigo.