Question juridique clé
Whether the opposition against the 2012-02-03 contribution decision was filed within the 30-day legal time limit
Solution extraite
The opposition was late because the decision was deemed notified before 2012-02-09, making the 2012-03-12 filing out of time.
Motifs extraits
Given ordinary mailing by A-post and the surrounding circumstances, a four-day delay in dispatch or delivery was implausible; the insured did not establish later notification.