I live in Denmark. Just checked their website and it seems to be the case. Cant download subtitles from there either:-( I hope for a solution very soon. Subscene.com though isnt blocked in my country. Maybe is has something to do with Opensubs also linking to pirated movies and subscene only have subtitles. Found a list from the Danish Tele Industry with blocked DSN adresse from February 21, 2018 and “api.opensubtitles.org” and “dl.opensubtitles.org” are both on the list.
A change in my DNS settings to google DNS unblocked it all:) But I still hope for a more permanent solution, so I dont have to keep using google dns.