Report offending images via drop-down menu “copyright” and choose images.
If you own copyright and a trademark, Amazon will remove offending images and issue a listing violation warning once you provide evidence of IP ownership.
You can also send the other seller an invoice for the unauthorized use of your image.
report them to Amazon for IP theft. Someone else suggested you’d have to prove it, but there are other threads on this going back years that suggest you won’t – that Amazon will automatically side with you to avoid getting drawn into the argument and tell the other seller it’s up to them to sort it out with you and (effectively) prove their innocence.
To open in a new tab, click: What to do if your Amazon photographs have been copied by another seller?