Hi Daniel,
Thank you for your reply. It sounds like you're being asked for the password associated with your old Apple ID email address.
If you haven't already, try these steps from If you're asked for the password to your previous Apple ID in iCloud:
Update to the latest version of iOS on your iPhone, iPad, or iPod touch. Then try signing out of iCloud again. If you're still asked for your previous Apple ID, try the steps below.
If you're trying to restore from a backup and Setup Assistant asks you for the password to your previous Apple ID, tap Skip. After you complete the Setup Assistant, you can sign in using Settings.
Use these steps to change your Apple ID temporarily:
- Go to My Apple ID, click Manage your Apple ID, and sign in with your current Apple ID.
- Select Edit next to Apple ID and Primary Email Address.
- Change your Apple ID to the email address that iCloud is asking you to sign in with. You shouldn't need to verify the email address.
- Sign out of My Apple ID.
Then sign out of iCloud on your iPhone, iPad, or iPod touch:
- Tap Settings > iCloud on your iOS device.
- Scroll down and tap Sign Out, then tap Sign Out to confirm. If you're using iOS 7 or earlier, tap Delete Account, then tap Delete to confirm.
- Tap Keep on My [Device] or Delete from My [Device], and enter the password for your Apple ID. Your data remains in iCloud, and it will be updated on your device when you sign in to iCloud again.
- If you're signed in on more than one device with this Apple ID, repeat steps 1-3 on each device.
- Go to My Apple ID, and sign in again.
- Change your Apple ID to the email address that you want to use. You'll need to verify the email address.
- Tap Settings > iCloud on your iOS device, and sign in with your new Apple ID.
If these steps don’t work, change your Apple ID temporarily again. Then sign back in to My Apple ID to make sure that your Apple ID was changed.
If these steps don't solve it, due to the nature of the issue you may find more information by using another one of Apple's support resources - https://getsupport.apple.com/GetproductgroupList.action.
Best Regards.