Whether the appeal against the provisional guardianship order was filed in time
No. The decision was deemed served when the registered letter was uncollected after the postal holding period, so the appeal deadline expired before the appeal was filed.
The appeal period under Art. 445 para. 3 CC ran from deemed notification under Art. 138 para. 3 let. a CPC. In adult protection proceedings, the summary procedure applies and deadlines are not suspended. The filing on 2013-05-06 was therefore manifestly late.