Stay well away from this plugin and find an alternative, unless you're fine with underhanded practices and egregious HTTP requests back to their own server. The plugin creators, WebFactory Ltd, go to lengths to silently add their own plugins to the first positions on the 'Add plugin' page on your dashboard. There's no indication that these have been added by a third party, and you have no control over this whatsoever as there's no option to control it. I poked through the plugin's code and there's not even a hook to stop this nefarious behaviour, it's astounding.

Sent them an email about this a while back and they never even bothered to reply. Here's the email, verbatim:

"1) It's absolutely disgraceful that you maliciously add two of your own plugins to the 'Add plugins' menu, in first and second position, with no disclosure that you're doing such. On a premium plugin, mind you.

2) What is with the insane HTTP requests to your API? That there's no setting for this and you's think this is okay is absolutely mental!"

I used this plugin for quite a long time, but never again.