I can’t get into my mail whit iCloud

See the articles If you can't connect or sign in to iCloud - Apple Support

If iCloud Mail isn't working - Apple Support

paigespringfield Said:

"I can’t get into my mail whit icoukd"

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Getting into iCloud Mail:

Tap return Key:

Having entered you credentials, tap the return button, seeing if you can get in.

Keep Personal Info Off:

Important:  These are open-ended user forums, and are available fore everyone out these to see. So, be certain to leave personal information, such as Credentials off of forums, because once someone finds out the item, then may know to whom it pertains. For Security and Privacy purposes, I have requested the Host to remove your photo.