How to change appearance of error message and/or icon?
Font color, margins and others are defined in wp-gemt.css, placed in the directory of this plugin. Please modify it freely to be what should it be. And loading icon is loading.gif, placed in the same directory.
The structual placement of the text and icon, currenctly after the submit button, is currently fixed. sorry.
Other plugins started incorrect beviours.
It might due to conflifts with javascript libraries, jQuery and others. Please look in wp-gemt.js.php, placed in this plugin's directory, then comment out one line which is described in the file.