Warning! This plugin is basically just an advertising plugin for an external service. Reading the description does not make you understand clearly that this will send data to another website, also most of the functionality advertised is only available in the paid version of that service.
To the authors: it is totally OK to build plugins that are addons for third party services, but it is NOT OK to trick users into installing a plugin without clearly writing about that it is a paid third party service. What you are doing here is a very bad marketing strategy, you should change that: be open about your service and do not use these annoyingly sneaky methods.
BTW also your plugin does throw multiple PHP warnings, please teach your developers to use WP_DEBUG while developing a plugin and before releasing it to the public. It is a shame!