After I changed my iCloud email/password my phone tried to use the old one for months, and I had to escalate the issue high up Apple Support to get it fixed (you can't erase your iPhone without proper iCloud credentials if findmyiphone is enabled). That also involved my email, so it was slightly different.
After I changed my iCloud email/password my phone tried to use the old one for months, and I had to escalate the issue high up Apple Support to get it fixed (you can't erase your iPhone without proper iCloud credentials if findmyiphone is enabled). That also involved my email, so it was slightly different.