keyboard with umlaut and other special characters
I'm using a macAir 13" with M1 BigSur. Until yesterday, if I pressed longer on "a", a special character window appears (just like on the iPhone keyboard) and I could choose one from them, for example the ä. (I'm using hungarian keyboard but often I also need to use a german characters). Since yesterday I can't open this special character window by pressing longer on "a". Maybe I made some mistakes, but I don't know what?
I would appreciate if someone could help me to get this function back... Thx a lot!