Confluence admin doesn't mean space admin automatically. The space permissions are up to the owners, and they probably don't include you.
As a Confluence admin though, you always have access to the permissions of a space, even if you have no other access. You should be able to go to Confluence Admin -> Spaces and drill down into the permissions for the one you need (I tend to add the confluence admin group to the space administrators rights everywhere)
Hi my Community friends! For those who don't know me, I'm a product marketer on the Confluence Cloud team - nice to meet you! For those of you who do, you know that I've been all up in your Co...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs