Hi Surya, we have replied you over the mail.
However to help other users with same query, our replies are inline :-
1) Do I need to install Moowoodle Free version plugin before installing the Pro version?
>> Yes, you need both MooWoodle Free and Pro.
2) I have several current courses and woosubscriptions to courses in WordPress and Moodle. Do I need to take something into account before installing Moowoodle Pro? Will I have to reconfigure these subscriptions or will they be integrated automatically?
>> As we sync courses from Moodle to WordPress only, hence MooWoodle will create the courses in WordPress and it’s product. Now if you have to create subscription for those products then yes, you have to re-configure the subscription part for those product.
Let us know if you need any further help.