I'm seeing a potential bug in Launch right now where I can't configure or install new extensions. For instance, trying to install the Experience Cloud ID service, I click "Install" and I see this screen:
No configuration options, and the only button is "close", which doesn't save/install. By comparison, on a property where I already had it installed, I can see this:
Sounds like other folks in the industry are experiencing this as well; the Launch team on slack has said they see it too and are looking into it.
There was an issue yesterday related to this. It was temporary patched with a permanent fix being deployed tomorrow (8/23/18). Thanks for reporting the issue and following up. Please let us know if you see this again after the fix tomorrow.