My iCloud upgrade
I tried to upgrade my iCloud to iCloud + but it’s not working
I tried to upgrade my iCloud to iCloud + but it’s not working
Did you follow the steps mentioned in this related article?
Upgrade to iCloud+ - Apple Support
Are you part of a Family Group and share the iCloud storage plan of the Family organiser?
In that case you can not upgrade your personal iCloud storage plan.
My iCloud upgrade