Epic has posted on Reddit that they will not be re-enabling the Playground LTM tonight. They are still working on repairs for the mode and need more time.

We know you want to get back out to the Playground LTM. We’ve got multiple teams working to get this mode back into your hands so you can let your imaginations run wild.

We want to inform you that the Playground LTM will remain closed for repairs for the night. We’ll have more information available tomorrow.

SOURCE: Reddit