iCloud Sync

Hello,

I have changed my Apple ID e-mail, and since then, I have encountered the following issues:

1. The feature that allows my Apple Watch to unlock my Mac no longer works. Initially, I saw a message in Settings.

After attempting to fix it, I no longer see any option for Apple Watch.

2. Shortcuts on my Apple Watch no longer work, displaying this message.

3. Handoff no longer works, even though all necessary options are turned on.

4. Focus is not shared across devices anymore, despite the options being enabled.

5. Find My on the MacBook can't find my friends. But iPhone can.

What I have tried to do to fix these problems

1. Unpaired Apple Watch and paired again (not from a backup, but as a new watch) several times.

2. Logged out of my Apple ID on the Apple Watch, iPhone, MacBook, and iPad and logged in again multiple times.

3. Restarted all devices many times.

4. Installed system updates for all devices on July 30. Now, I have iOS 17.6, iPadOS 17.6, MacOS Sonoma 14.6 on my devices.

5. I erased all data and settings on my iPhone and Apple Watch and set them like new devices, I didn't restore them from a backup.

6. Checked that all my devices are in the same wi-fi network with the latest updates and use the same Apple ID.

Nothing helped :(

Please, help me fix these problems. I suffer so much from this.