Due to storage restrictions, your plan determines the number of active styleguides owned by your account:
Free: 4 styleguides
Team: 12 styleguides
Organization: Unlimited styleguides
Enterprise: Unlimited styleguides
☝️ Those on the deprecated Starter plan or Growing Business plan can be the owner of up to 12 active styleguides.
If you need more styleguides to work with, you can upgrade your plan by clicking “Change Plan” button on the Billing page: https://app.zeplin.io/profile/billing