Carlos is super responsive. I asked a question and it seemed like he responded in one minute, which is really unheard of. He even responded to my user error. Also, the plugin has more customization and features than you should expect. Great guy and great program.
This is a really great and flexible solution for creating quizzes. I have (right now) about 17.000 completed quizzes with no performance problems.
Also, it looks good, is easy to style (if you need to). Money well spent.
Recommended! Great plugin, flexible, packed with features but not bloated. Also, the support from author is great & super fast! We had an issue with Flatsome compatibily for which the author provided a quick & easy solution.