Any Workflow content created in Tango will always be stored in your account until you tell us otherwise.
Tangos that are created while on a Tango Pro plan will likewise be accessible if a Pro Workspace is downgraded to Free.
If a Pro Workspace is above the limits of a Tango Free plan (5 Tangos, 10 members), then no new Tangos can be created, or no new members can be added.
If you would like to delete your account and all associated content, please reach out to [email protected] to let us know.