All project detail plan disappeared. Could you help to check what's happening?
AdminBacklog Support (Admin, backlog) commented
Please make sure your project has not been archived. To reactivate the project, please go to:
Space settings > Project:Edit projects
(Click "Show archived projects" if the archived projects are hidden.)
Select the project you want to un-archive. You'll see the page like below:
Take the tick mark next to "Archive the project" at the bottom of the page.
If this doesn't solve the problem, please contact firstname.lastname@example.org