After trying the free version, I upgraded to the professional version.
True, I had some initial problems ( I did'nt know I had to remove the free version before installing the pro version ) that required re-installing the plugin, but since all the settings and data remained intact, it was just a matter of 10 minutes to re-install the plugin and get in going.
The designer of the plugin was very responsive and helpfull, and always answered my support request within 24 hours.
Now it works perfect.
Thanks Niaz !