This has been a common problem for me for a while now. I know the password is correct because I just checked my email via safari @ iCloud.com. C'mon Apple your only one of the richest companies in the world, fork out what you have to keep your iCloud email working. I pay a subscription for additional iCloud space. This clearly has been a problem for months, & a great man who is no longer with us would be spinning in his grave if his customers had to put up with this to get their iCloud email via a Mac. Anyone else not have this issue as much on their iOS device(s)?