CE Marking for Jewellery

I have been selling Fashion Jewellery for years on here and all of a sudden Amazon are taking listings down each day asking for CE marking or something.
I have asked my supplier about this before, is it something to do with REACH???

If so then I am stuck as the suppliers can’t afford to pay for certificates for each and every product with them only being inexpensive items.
So now if this keeps carrying on, I have no buisness left.

Why is it happening now?