I am changing a theme in Wordpress, and in an earlier theme, there was something like this that added a an email signup widget to the page:
[green_tick_1_list width="100%"]
But in the new theme that I installed, this just shows up as text. Is there any way to make it show up as the email signup form like it used to?
And what is that syntax? Is that something I can create in WordPress per each theme I use?