Admin and full rights users can't set device appkey

I’m a bit stumped. We’ve got multiple applications, some I created, some a colleague who has now left has created. I am admin in all applications however, I can’t input Appkeys for new end devices for applications that I did not create. Users that I create and grant full rights to, also can’t fill in an appkey in my old colleagues apps but they can enter it in apps that I own. Clearly there’s some underlying issue with rights for this not being the application creator but I can’t see anything in the admin panel to rectify this. Any ideas?

I believe that admins don’t have the right to read and write root keys without being a direct collaborator. Can you try adding yourself as collaborator to the app? If that doesn’t work please contact support.

Hi there, I tried this and it still didn’t work unfortunately.
Even as admin and collaborator this is still greyed out for me, which isn’t under the apps I created which I think might be the difference.

Is there anything using the CLI for the app I could change?