Why is my Apple password not working for iCloud on Apple Watch?
My apple password wont accept the password that works when I login to Icloud
[Re-Titled by Moderator]
Apple Watch Series 8, watchOS 10
Did you set up your Apple Watch with the same Apple Account mail address, you use for logging into your iCloud Account page?
Sign in to your Apple Account - Apple Support
If you forgot your Apple Account primary email address or phone number - Apple Support