I don't know who reported this user, but I think he was right. I also think it is not the first time their models have been removed, for example this model posted on 08-01-2020:
https://www.cgtrader.com/3d-print-models/jewelry/rings/n027-ribbon-ring
has a comment from a buyer from 04-02-2020 (prior to current posting date). Other comments from buyers and the forum are also previous. There are also numerous links to these models, on websites like yeggi, which no longer exist, such as this model for example:
https://www.cgtrader.com/3d-print-models/jewelry/rings/n061-ring-with-watchstyle
link to the model in CGT that no longer exists:
https://www.yeggi.com/q/rolex+ring/2/
Although they have removed the brand (not in all cases) and even if they were made by the user, their models are illegal copies of jewelry brand designs. I am sure that the true owners of the rights would not authorize its sale. CGT should not allow the sale of these models, (or many others in the same circumstances), because they infringe the copyrights of third parties and cause serious damage to the owners of those rights. However, it has returned its models to the user and there are many more users, with models of this type and with high sales.
illegal copy, (includes trademark Paloma Picasso, for Tiffany):
https://www.cgtrader.com/3d-print-models/jewelry/rings/n132-olive-leaf-ring
original:
https://www.tiffany.es/jewelry/rings/paloma-picasso-olive-leaf-bypass-ring-GRP11079/
illegal copy:
https://www.cgtrader.com/3d-print-models/jewelry/rings/n138-men-stylish-band-ring-38a0129b-d79c-4dd0-84c0-7fa538d77e6a
original (design by David Yurman):
https://www.davidyurman.com/products/mens/mens-rings/forged-carbon-band-85mm-r15602mss.pdp.html
illegal copy:
https://www.cgtrader.com/3d-print-models/jewelry/rings/n136-atlas-pierced-narrow-ring
original (Tiffany design):
https://www.tiffany.es/jewelry/rings/atlas-pierced-narrow-ring-GRP10538/
illegal copy:
https://www.cgtrader.com/3d-print-models/jewelry/rings/n145-wide-woman-ring
original (Tiffany):
https://www.tiffany.es/jewelry/rings/tiffany-co-schlumberger-rope-four-row-x-ring-GRP00209/
illegal copy:
https://www.cgtrader.com/3d-print-models/jewelry/rings/n029-set-of-wedding-rings
original (Tiffany):
https://www.tiffany.es/jewelry/rings/tiffany-classic-milgrain-wedding-band-ring-GRP10451/
illegal copy:
https://www.cgtrader.com/3d-print-models/jewelry/rings/n137-atlas-open-ring
original (Tiffany):
https://www.tiffany.es/jewelry/rings/atlas-open-ring-GRP06996/
illegal copy:
https://www.cgtrader.com/3d-print-models/jewelry/pendants/n135-tiffany-atlas-pierced-key-pendant
original (Tiffany):
https://www.tiffany.es/jewelry/necklaces-pendants/tiffany-keys-atlas-pierced-key-GRP09024/
illegal copy:
https://www.cgtrader.com/3d-print-models/jewelry/rings/n054-wedding-diamonds-ring
original (design by David Yurman):
https://www.davidyurman.com/products/womens/womens-rings/dy-crossover-wedding-band-with-diamonds-in-platinum-52mm-wr3071-.pdp.html