Unfortunately, it’s currently not possible to unbind an organization and bind it to something else. You can vote for adding this feature here.
The only way to have your organization bound to a different DevOps Platform currently is to create a new organization and re-import your repositories there. Unfortunately, that means you’ll lose the results of previous analyses on these projects.
If you have a yearly subscription for your current organization, a new coupon can be issued for your new organization by reaching out to your sale representative.
If you have a monthly subscription by credit card, you can simply stop your subscription on the old organization and re-subscribe on the new one.