On August 17, 2021, Adobe announced that they were beginning the process of discontinuing Photoshop's 3D features, due to 'technical reasons'. You can read the announcement on this page: https://helpx.adobe.com/photoshop/kb/3d-faq.html
Adobe provided no further information regarding to how long this transitional period will last. I decided to make certain changes immediately:
The following free 3D add-ons have been discontinued:
Get an extra 33% discount, on top of the 50% discount already applied to the bundle price!
Price after the 33% off:
77.90 49.90 EUR | 93.90 59.90 USD