2. Application for the Return of an Item

Buyer may only apply for the refund and/or return of the Item in the following circumstances:
• The Item has not been received by Buyer;
• The Item was defective and/or damaged on delivery;
• Seller has delivered an Item that does not match the agreed specification (e.g. wrong size, colour, etc.) to Buyer;
• The Item delivered to Buyer is materially different from the description provided by Seller in the listing of the Item; or
• By way of private agreement with Seller and Seller must send his/her confirmation to Shopee confirming such agreement.

I bought an omron blood pressure monitor from unauthorized Omron retailers in Shopee but I click received order before I try to register the warranty for the item. Then, the item cannot register warranty in Malaysia website but seller say item is international warranty, need to register in Japan website and bla bla bla. I cant even find the product registration section in JP website.
When I ask for address, name and phone no. to return the item, seller keep reply with non related information and now seen but dont want to reply anymore. When I seek for Shopee customer support, they ask me to negotiate and come out a solution with seller.
I really dont want to accept a non auhorized blood pressure monitor to be used for grandma and just want to return it. What can I do next?

Here is the link that say shopee seller is an authorised Omron retailers:
Omron website
Shopeehomecare https://shopee.com.my/shopeehomecare?catego...temId=765001969

he just gone wild, greed to get cheap product without proper knowledge, now start blaming everything other than him self.