Open the invitation link shared with you, then sign in or create your Napkin account. If you received an email invitation, use the invited email address. A shared Teamspace invitation link lets you join with your own Napkin account.
You can accept an invitation on a computer, phone, or tablet. Follow the steps to join the Teamspace or open the shared Napkin. If the invitation does not work, ask the sender to check the invitation or send a new link.