@Aklapper When I look at the List of largest MediaWikis, I see that at the moment, in the "Last checked" column, all entries have a timestamp between 2018-12-21 18:00:40 and 2018-12-22 05:50:32 and are highlighted as fetching (green). The three Wikias however have timestamps from 2018-11-07 respectively 2018-09-15 and are highlighted as broken (red).