The functions are there but non descriptive, a lot of trial and error without documentation and support.
Ease of use
Requires a lot of trial and error without any support or documentation. So the learning curve is very steep and time-consuming.
At first the support was good but deteriorated to being sporadic to non-existent. Queries made in the forum goes unanswered - still.
Value for money
Higher than existing and established extensions. If only the price is match with a basic and proper documentation and support.