Greek metadata

Hello. I have upgraded my HDDs with bigger ones. I have copied my movies also to new drives and now the server is scanning. My main issue is that I use Greek metadata for movie names etc. When it finds a movie that has a Greek title the it doesn’t match it. If I do the scan manually it finds the right title (and most of times there is only one). Is there something I miss and it doesn’t do the automatic matching? Now I have to match 1000+ movies manualy…