iOS: Build in progress for many hours

Not sure what to do when a build hangs, and help would be appreciated. Can they be cancelled somehow? This is the build guid: c9bb4d96-7dbf-4821-9476-0cbf31cc2ee0

In this state, I am prevented from doing any builds, even android, and there doesn’t seem to be any way out.

Looking at the standalone app builder logs, your build is no longer hanging. Are you able to try again? It looks like there might have been issues with your iOS provisioning profile. If so you might want to clear it with exp build:ios -c and tray again.