Do you use any special characters like exclamation marks in your button names?
Is your PHP installation new enough? Reaction buttons require at least PHP 5.2.
Do you use a cache plugin? When the page is cached as soon as you reload the page your vote isn't shown anymore until the cache is cleared. See below.
I want to deactivate reaction buttons in certain situations
Next to the normal options (categories, page types, post options, ...) you can set the global variable $reaction_buttons_deactivate to true e.g. in your plugin or certain theme regions to deactivate reaction buttons during the execution of that code. But don't forget to set it to false again when you are done!
How can the plugin work with plugins that cache the posts to increase page performance?
I added an option to refresh the cache of a page after a button was clicked. But the cache plugin has to be supported by reaction buttons.
What cache plugins are supported for automatic cache refresh?
Sure, use the wordpress support forums with a link to the plugin and I'll check it out next time I've got time for the plugin. If you want it fast, check the documentation of the cache plugin and find me the function to delete single page caches. Then it shouldn't be a problem to implement shortly.
Requires: 3.3 or higher Compatible up to: 3.9.2 Last Updated: 2014-5-20 Downloads: 18,951