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I have read your concern. Unfortunately we are unable to say if they are a scam. However, when you pay with PayPal on any website, PayPal Purchase / Buyer Protection covers you in case there is a problem. If an item doesn’t arrive or is significantly not as described, we will help you get a full refund.
You may file a dispute with us if you have not received your item , I attached a link below for you to know more.
Since the merchant provided you also with a tracking number, we might need you to contact the shipping company and request for any documentation with their letter head that the tracking was not associated with your address. Once you have the documentation, please contact Customer Service to file add it as an evidence.
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