If you have worked with MotionCanvas or wanted to give 2D canvas animations it a try, you might notice that the website is currently not reachable and that the repo has not received any updates in over a year, suggesting that the project is not actively maintained at the moment.
However, you will also find that the community is still active and that, for example, Canvas Commons is an active fork of the original repo: https://github.com/canvas-commons/canvas-commons
Docs for Canvas Commons: https://canvascommons.io/ Furthermore, the old docs for Motion Canvas can be found here: https://archive.canvascommons.io/
Cheers! Patrick