Display author.php ?

Hi,
I previously had another plugin to create a different name as a permalink. But it hasn’t been updated for a long time and after the 6.1 update there was a critical error.
display name author permalink it was called and was actually quite simple.

At that time, I was shown an author page that also displayed an About Me and my photo when I called up the author URL.
With your plugin, only a list of all my posts is displayed.
I think it’s a pity that it is not displayed correctly.

Is there a way how to load author.php again when I call domain.xx/author/name/?
Or can you give me a tip on where I can fix the problem? What can be the reason?

Greedings