brandgineering,
Sorry for the trouble. Can you please let me know how exactly your sites were “destroyed” by using this plugin? It’s functionality is very simple: after you’ve pasted a conversion pixel into a certain page’s FCP metabox, that block of javascript code will be output between the <head> and </head> tags on the front end of your website each time a user visits that page. If you deactivate the plugin, the metabox is no longer rendered in the WordPress admin, and nothing is output on the front end of your site, either; your site would be essentially unaffected at that point.
I would just caution you to please make sure you’ve pasted in the conversion pixel code exactly. If you mistakenly missed even a single character when copying and pasting it, you would cause the plugin to output invalid javascript on the front end of your site, which could potentially result in a blank white screen.
Please watch the video on the main plugin page and follow it exactly, and make sure you’re pasting carefully as described above, and you should be all set. Or if you’d rather use another plugin, check out Tracking Code Manager.
Thanks for your interest in using this plugin.