Can't add provisioning profile to iPhone

I've added my iPhone's correct UDID in the "Devices" section in Apple Developer account, and I created a Development Profile. I then downloaded it (as a .mobileprovision file) and am trying to add it to my connected iPhone via XCode. I'm getting this error message:

Failed to install one or more provisioning profiles on the device. Please ensure the provisioning profile is configured to this device. If not, please try to regenerate a new profile.

I have ensured the provisioning profile is configured to this device and have tried regenerating it. Same result. My iPhone has "Developer Mode" turned on. How do I troubleshoot this further?

As a first step, if you create a new project from one of of Xcode’s built-in templates, confirm that Xcode’s automatic code signing is enabled, and then allow it to manage your signing assets, does that work?

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

Can't add provisioning profile to iPhone
 
 
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