Hi bstr,
There were no functional changes in the most recent update for the plugin — we just updated the compatibility notes in the plugin description.
In any case, I think the first thing to do is to try manually disabling the plugin so you can access your website again. These instructions describe how to manually disable a plugin over FTP, when you don’t have access to your admin page.
We have a team of engineers based in Atlanta, GA USA, who are always happy to help. The quickest way to reach us is by phone (866-604-6431). You can also email us at [email protected].
– Taylor