(1) The court must set aside a judgment entered under Part 12 if judgment was wrongly entered because in the case of —
(a) a failure to file an acknowledgment of service – any of the conditions in rule 12.4 was not satisfied; or
(b) judgment for failure to defend – any of the conditions in rule 12.5 was not satisfied.
(2) The court may set aside judgment under this rule on or without an application.