You can delete a company account with all associated data (quotes, invoices, contacts, items, users, etc.) at any time.
To do so, go to “Settings > General”, then click on “Delete company account”.
Potential reason preventing deletion of your account:
If your company is domiciled in France and is subject to VAT fraud prevention law (Article 286 of the French General Tax Code), you cannot delete your account unless it only contains non-finalized invoices.
In this case, you can cancel your subscription to stop using the service, while still retaining access to your data in accordance with legal requirements.
Link to this article:https://toolcie.com/en/support/k/how-do-i-delete-company-account