Possibly a seller is placing their own (fake) orders to allow that seller to build up ratings or feedback at a site -- possibly not even eBay at all -- and using a third party fulf

https://community.ebay.com/t5/Report-eBay-Technical-Issues/Why-is-it-eBay-telling-me-have-an-outdated-browser-when-my/m-p/28597457#M67720

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