01-02-2021 12:00 PM
Auction ended officially at 20:00:00 hrs
2 bids then processed at 20:00:06 and 20:00:15 which increased the final bid price and created a new auction end time of 20:00:15
eBay don't accept bids after the auction has ended. The most likely explanation for the matter that you describe is that the timing is out on your device, and therefore the clock is displaying the wrong time and giving the illusion that the auction has carried on after the end time stated on the site.