How to edit the author bio widget?
To show your author profile image you have to register at Gravatar. For more information please see this tutorial:
https://mhthemes.com/support/using-gravatar-for-user-avatars-wordpress/
And to add text to the widget, simply navigate to “Users => Your Profile” in your WordPress dashboard and add your “Biographical Info”.
Can I list all authors without a photo instead?
You can use the “MH Authors” widget to display a list of authors. The widget has also an option to disable the avatars.
Use first name instead of username in Author Bio widget?
Yes you can control what name you are known by via your profile page at “Users => Your Profile => Display Name”.
How to disable the author box completely?
There is an option for the author box located in your WordPress dashboard under “Appearance => Customize => Layout Options => Author Box”.
Why can I see 2 author boxes on each post?
In case you are using a plugin to add an author box to your site and want to get rid of the author box that comes with the theme, you can disable the built-in author box in your WordPress dashboard under “Appearance => Customize => Layout Options => Author Box”.
===================
How can I change the avatar image from a circle to a square?
Using your child theme style.css file, add this:
.mh-author-bio-image-frame { border-radius: 0; -moz-border-radius: 0; -webkit-border-radius: 0; }
How can I completely remove the avatar from the Author Bio widget?
Using your child theme style.css file, add this:
.mh-author-bio-avatar { display: none; }