DeleteProject

Oh no, I think I deleted my project! What do I do?

First, relax -- there is currently (as of Oct 2017) no way for you to actually permanently delete a project in CoCalc (we do plan to implement this).

I clicked the x next to my project at the top, and now it is gone

If you close a project, just click on the "Projects' tab in the upper right, then find your project in the list and open it. Done.

I (or one of my collaborators) clicked on "Delete Project" in Project Settings.

In this case, click "Deleted" at the top of the Projects page to show all deleted projects, then find your project, click on it, go the project settings page, and undelete your project.