THIS IS WHAT MICROSOFT SAID AT THARE WEBSITE :
befor that a have a link so you all can see for your self
AND THIS IS WHAT THEY SAID.
Microsoft retired the Remix3D.com site on January 10th, 2020.
There are a number of alternate content sharing options available today. OneDrive represents the ideal platform for sharing your 3D models, and it offers additional tools, permission settings, and security to help protect your data and content. With the retirement of the Remix3D.com site, we hope to streamline our offerings in this space and provide you with a more cohesive experience.
We appreciate your patronage of our service.