How to check the add-ons product purchased by a member?

If you have add-ons on sales during your registration process (insurances, books, magazine subscriptions...) - you can see what has been bought by a specific member from the membership details menu

 

How to access one member's membership details?

From your "memberships" menu, lookup either your member name or membership number and open

How to access the purchased product list?

Go to the "products" section