It depends on what you want. The “Freemium” pricing model is very commonplace these days (since 2005), so it’s a bit unreasonable to give a negative review based on the fact that you want a premium feature.
Nothing in life is free. Even Facebook and Google collect and sell your personal information in exchange for “free” services. We do not sell your private information, so we must cover costs in other ways.
Cheers!
Also, for the benefit of others, I wanted to mention that the developer working on this plugin went ahead and released the latest update BEFORE allowing me to test it.
Now that I’m testing it, I see that the “Cache Options” is showing as “Upgrade Required” for Free account users, which it should not. I do not know, specifically, why 84ck80n3 left their negative review, but this might be why. People should be specific when leaving negative reviews, because they might achieve something positive, if done the right way. 😉
In any case, I have asked my developer not to release anything without proper testing (this is the first time they’ve ever done that), and I will have him release an update to fix that bug shortly.
I just confirmed with my developer working on this plugin, right now, that the SVN was misconfigured for “TRUNK” as stable. So, recent changes were released, by accident, that were not tested.
My developer is working to correct this and get a stable version released.