The user name seems to draw its data from the Adobe account on record. There my name has an accent. In the Identity section in the Acrobat settings I entered my name without an accent as this obviously still leads to some display issues.

Maybe this could be changed so that the display name for the comment is taken from the “Name” in the Identity settings.

There are so many names with diacritics worldwide and they probably get all spelled in a wrong way.