Command Center Destroyed

So, i have been doing the Legion content for various reasons, and i finally, by myself, got the resources to finish the Command Center at Deliverance Point ( i am a casual player, 1-2 hours a day.)

I go to complete it, and the thing is under attack, at 10% and i couldn’t figure out how to save it before it was destroyed.

Now it just shows as destroyed in the blueprint book, no other options for it, and it’s been a week.

What do i have to do to start the rebuild?

Thanks!