Cancel is terminating the entitlement when the validity period runs out.  Revoke is terminating the entitlement immediately.

immediate = false is an instruction for the merchant to terminate the entitlement at the end of its current billing lifecycle. The merchant should respond with the terminationDate sent in the response body in UTC ISO 8601 format.

Yes, ACTIVE, SUSPENDED, PENDING & ACTIVE-ENDING can all be terminated.

No, once the entitlement is revoked the use should no longer receive the benefits of the subscription.

Bango will respond with a HTTP 409 CONFLICT.

Immediate terminations requests must be submitted at the end of the subscription period but before the next renewal. End of cycle termination requests can be submitted at any time during the billing cycle.