why does my account not want to log in
Why does my account not want to log into the apple account?
It keeps on saying 'The maximum number of free accounts have been activated on this Iphone'.
Welcome to the Apple Community.
It appears you might be trying to create a new account rather than simply signing into an existing one.
Unfortunately once all the 3 iCloud accounts have been created on your device, you cannot create any more regardless of what you do. You will need to re-use one of the accounts that you have already created or create your new account on another iOS device or Mac computer.