Although the search result on snapmap says Moldvaer not Moldvær

Yeah, no idea why that happens. Thought maybe they used an english language version of the API that anglified Norwegian letters, but other place names do have æøå correctly, so no idea.

Do GeoNames allow change proposals?

Haven’t seen any way of reporting errors, but haven’t looked too hard. Considering they have their own page for all their data sources, it might just be a data aggregation service. The data source page for Norway lists SSB, Kartverket, Geonorge, and Erik Bolstad (weirdly specific) as data sources. I am not very familiar with any of these, so not sure how to check if the “Moldvær” version of the name is present in those datasets to check if that is where the error is coming from.