Link before div dissapears

Hi! Thanks for this easy to use plugin!
It works perfectly for me but I have just a little issue for your info 😉 :

I try this code as single block content and works correct on the editor. But when I save the post, the link dissapears. Maybe is the wordpress or tinymce markup cleaner.

{a href=”http://thelink.com”>{div class=”myclass”>{strong class=”white”>+ INFO{/div>{/a>

OK, SOLVED! :
Just changed the div to span and adjust my css definition:
{a href=”http://thelink.com”>{span class=”myclass”>{strong class=”white”>+ INFO{/span>{/a>

https://wordpress.org/plugins/visual-editor-custom-buttons/