Plugin Submit button

The plugin does not directly control the size of submit buttons, it uses standard HTML and lets your WP theme determine the appearance of the button.

It is usually pretty easy to change this using a CSS rule that targets the button, where you can set the size of the button. Button sizes are usually determined by changing the padding so that it will always be the right size for the text it contains.

The plugin has a place to put your custom CSS rules in the plugin settings under the Custom CSS tab.