Change persons names ?

Hey I have the problem, that I can't change the names of people once their account is set with the E-Mail-Adress.
I even deleted them and replaced them by their real names, but the system automatically goes back to the former false name.
I also have some typos with other accounts, but can't find a possibilty to correct them.
Would be nice if you could fix that with the next update! (or tell me how it works)

Blessings from Germany!

Once a user is added, their personal information can only be changed by themselves.
https://www.worshiptools.com/en-us/docs/106-user-details