There will be something wrong with your site which is causing this, it is not the plugin.
It will either be your theme or another plugin you are using. I recommend switching to the default theme to see if that fixes it (just to confirm the theme is the problem) and failing that, try deactivating plugins one by one until you find which plugin is causing it.
Once you find the culprit, I’m happy to take a look at it and figure out where the problem lies.