13. The judgment debtor may at any time within the time limited by the order for registration after service on him of the notice of the registration of the judgment apply to the Court to set aside the registration or to suspend execution on the judgment and the Court if satisfied that the case comes within one of the cases in which under section 3 (2) of the Law no judgment can beordered to be registered or that it is not just or convenient that the judgment should be enforced in Cyprus or for other sufficient reason may order that the registration be set aside or execution on the judgment suspended either unconditionally or on such terms as it thinks fit and either altogether or until such time as it shall direct: provided that the Court may allow the application to be made at any time after the expiration of the time herein mentioned.