Thanks for the donation
To remove the “Fluency Admin 2.3 is a plugin by Dean Robinson – Donate” text, you’ll need to make a small modification to the wp-fluency-2.php file in the plugin folder.
All you should need to do is find and comment out the following line:
The ‘cool’ text? Are you referring to the WordPress version number and the “cool, stay updated” on the right hand side of the footer? If so that’s output by WordPress, not Fluency, it can probably be hidden with the addition of a couple of lines of code, but I’ll have to look into it and get back to you.