Caught this one while troubleshooting some old issues, it's related to how we interpret addresses.
The email changed because it's linked to the Stacks address, and the address can no longer use the mainnet address. Not sure if this happened with any others but would be good to get it cleaned up either way.
Valid profile: 19f26c43-1ff1-455b-8c36-40681bc0b63b
Invalid profile: 44429f56-402a-4342-a4ac-79e728621eef