Causes Google Penalty

Just a word of caution to plugin users.
The plugin has a habit of blocking Googlebot and returns excessive errors in Webmaster Tools which resulted in my first page rank being completely removed and now the site no longer appears in SERPS.
For those who rely on Google rankings to generate revenue, this plugin could destroy any chance you have unless the developers come up with something that will not get in the way of crawlers.
PS, I allow the bots to crawl everything so it’s not the Robots txt file but what iThemes writes to the htacess file.

Developers, you need to fix this or come up with something that remedies this problem because it damages websites in Google.