Product features are excellent however there are a few things that could be improved:

Pros:
- A lot of features and customization capability
- Animations and buttons look awsome

Cons:
- There are Russian-like characters everywhere (the email field label for example). And no, it is not in your UI but in the Lead form that will be shown to your customers when you complete your quiz.
- Support is non-existing. I opened a support request on Sunday and never got a response. Not sure if other weekdays would be better.
- There are many broken links to the Help center or documentation.