Every time you install a new plugin on your site, especially if it’s a third party plugin not from the Wordpress repository you run the risk of seeing the infamous White Screen of Death and your wordpress installation breaking.

Not to panic though, you can fix this issue quickly and easily in a couple of steps.

Step 1 - Log into your FTP client and delete the plugin file or folder from your wp-content/plugins folder.

I use Filezilla as my FTP client to connect to my server. Here is a quick video showing you how to connected to your server to manage your wordpress files 

Once you find and delete the new plugin folder (or file) it will reset the site and automatically deactivate the plugin.

If you are updating an existing plugin and the site breaks, follow the above procedure by deleting the plugin from your wordpress wp-content/plugins folder and then re-upload the older working version of the plugin you were using.

You can see all the old versions of a wordpress plugin in the wordpress repository.

Once you upload the older version of the plugin back to your site, you can simply head into the plugins settings inside of wordpress and activate the older version.

The plugin will continue to prompt you to upgrade, DO NOT DO THAT. (unless you want to go through these steps again)

Until the conflicting plugin/code is fixed, you are going to want to hold off on upgrading it.

Typically plugin updates are done to add features, but if the update is concerning a security issue, you will want to consult with a wordpress ninja (or the plugin developer) to get the issue resolved.