Fake Product Received via FBA

I ordered 2 of ‎B07JKB2H59 (UNO Flip card game) mid November as Christmas gifts.
We played with one pack on Christmas night.

The following day my daughter messaged to say that she believed our packs were fake as the colours were not distinct enough (we were having issues describing them that evening) and that her pack from a well known supermarket were definite blue/orange/pink/purple colours (see pics of the card with 4 colours on it) - there is no orange in the ‘fake’ packs just shades of pink, blue, purple, which you can barely tell apart.
I checked the reviews and it does appear that some packs are being seen as fakes.

My issue is this -
Firstly how do I report it to Amazon? I’ve raised a return but that won’t suffice.
Secondly, how do I report the correct seller and how do I find out who the actual seller is?

As a seller myself I’m being cautious here as there are multiple sellers on this listing and I’d hate to report the wrong one!! But as it was a ‘Prime’ item and from a fulfilment centre I’ve no idea who originally sold it?

Any links to report or advice appreciated - TIA.

UNO 2.JPG 2138×2851 2.51 MB

UNO 1.png 924×774 828 KB