In all of EU you can have your name spelled with or without the diacritics are it's equally valid, I have official ID documents with my name with and without th

In all of EU you can have your name spelled with or without the diacritics are it's equally valid, I have official ID documents with my name with and without the diacritics and it's not a problem in the slightest. In fact when my son was born, we decided to keep the diacritics off his first passport(he has dual nationality) but keep them in his second passport for the country where the diacritics came from originally.