Shortcode showing on site, not button

Hello,

I’m using the free version and I’ve tried placing buttons which I’ve mafe onto the site by copying and pasting my shortcode:

[maxbutton id=”12″] [maxbutton id=”1″]

into the page. But this code(and not the button) is showing on my site. I didn’t tick the external CSS box.

My site url is: http://booksforboffins.com/leicester/?page_id=440

My Text editor currently looks like this:

[maxbutton id=”12″] [maxbutton id=”1″]

Thanks and take care

https://ww.wp.xz.cn/plugins/maxbuttons/