course is not enrolled by student through hikashop

hii
i have integrated hikashop & joomdle.
when purchase my course in hikashop it is not able to enroll the course in MOODLE.
can anyone tell me the solution for this.
shall i need to enable paypal in MOODLE also ???? ( this is my big doubt )

Do you have system health all green?

What script versions?

yes i hav followed each & every step in that link. But still it is not able to enrolled into course.

System health is all green?

This is very important step and if not green, Joomdle can't work.

yes sir all are in green status.

If all is green the review the installation steps because you probably skip some, specially the plugin.

no sir i have installed every thing in correct way.

You do not need to enable paypal in Moodle.

Can you successfully purchase other products in Hikashop?
Do you have a price set for the courses in Moodle?
Do the courses arrive successfully in Hikashop?
Do you change the product category of those courses in Hikashop?
Do the prices show up correctly in Hikashop?
What is the status of the orders for the courses in Hikashop?
Is there any error messages provided?
Are you trying with an existing Joomla user or a new user? Try a new user (ie not registered in Joomla before) and see if that user appears in Moodle users.