From what I understand, this is a thing to do with PayPal. When you buy an item online through PayPal and have it shipped to you here are 3 kinds of coverage:
1. Eligible - this covers both INR (Item Not Received) and Unauthorized Payments Claims.
This is only available to items bought through EBay and those accounts with "Confirmed" addresses.
2. Partially Eligible - this covers INR (Item Not Received) only.
This is available to items bought online provided they meet the eligibility requirements, which can be found on the page linked below.
3. Non-Eligible - Neither INR (Item Not Received) nor Unauthorized Payment Claims are covered.
This is available to items bought online that don't meet the eligibility requirements, which can be found on the page linked below.
More info can be found here:https://cms.paypal.com/ca/cgi-bin/?cmd= ... ection_faqTL;DR: don't worry about it. It has to do with BD, Paypal, and the type of protection they get as the seller.