Dear @careerbuggy,
Thank you for your reply.
First of all, all the features you have mentioned are absolutely free for usage and you can easily make use of them with the free version of the plugin.
So, there is no question of paying in this regard.
You can pay, for instance, for the Paypal paywall feature (and dozen of other features), which we consider to be absolutely normal as you are going to make money with this. So, it is fair to pay the Plugin Developer for that features.
Second, again I want to mention that it is TECHNICALLY impossible, and only because of this, all the plugins you rated 1 for couldn’t implement that feature.
As far as we can understand, you are well aware of programming, so you can easily implement this (if you are sure it is possible) and contribute to either our or other Free plugins. We would only be happy about that.
As to the work we have done for the development of the plugin, please note that 10000+ clients are making use of the Free version of the plugin and are satisfied with its functionalities. Also, we are very happy that we have managed to be of use to the community.
So, we consider your opinion to be extremely subjective in this regard. Anyways, you definitely have the right to express your opinion.
Thanks and have a nice day!