Your original post is over a month old, but am responding to ask if you received the item.
As others informed you, you can activate the MBG once your parcel is at least 24 hours late per the last estimated delivery date seen in the listing. You never told us that date, so it was difficult to offer help or advice. If you did actually open an INR case on eBay after the appropriate time had elapsed, then you needed to return to the case and ask eBay to step in after 3 days.
You really, really need to read the MBG.
Message 8 of 12