You can connect to any number of MyOsmo accounts from any iPad. Just open any Osmo app and tap the button in the top right corner of the home screen.
If you're not connected to any account yet, the button will say 'MyOsmo'. If you are connected, the button displays one of your player profile avatars.
Then tap 'Log-in', enter your username and password and tap 'Login', or tap 'School Login' to connect with your activation code.
If you have a problem connecting, please write us at firstname.lastname@example.org with the name of the Osmo app you're using and a screenshot of the problem screen.
Also, please see our instructions for myOsmo account creation and management here: