There's something that is important to be noted, I think :
As ESC United is an English-speaking forum, the database is managed in Latin alphabet and you are tasked with providing a corresponding version of your artist's name and song's title when submitting your entry. However, the use of diacritics or other letters that are present in some languages was always up to debate (é, è, ä, ö, etc.)
As they're written in a variation of the Latin alphabet, we never asked people to drop them, however a problem arises when you search in the database.
For some of them, if you type the basic letter in the research bar the variations will come up, but for others they will not. The contrary is true too.
We can't control how people type their entry names into the database if they use the diacritic or basic form. There's a high chance the person would miss their entry if they only search for one of the versions.
The database has been managed by many people all over the years, with each their own policy so there's a lack of consistency on that subject. Personally, I kept for the most part the diacritic form but I know that at the beginning I didn't.
In short, I want to bring this to your attention and remind you that it's better to search for both versions when looking at your potential entry into the database. It hadn't come up as an issue in entry confirmation yet, but better be safe than sorry.