It’s saying too many iCloud accounts have been logged on to my phone
What do I do if I have too many iCloud accounts in my phone
iPhone 6, iOS 12
Question marked as
The message is not about too many accounts "logged on" your phone, but that you have already created the 3 iCloud accounts allowable on that iOS device.
Create one online instead. >>> https://support.apple.com/en-ca/HT204316#macos