"Sign in with Apple ID" in Apple Mail when using more than one icloud account
Hello everyone!
i always get an error on Mac and iOS when using more than one iCloud accounts.
On my mac i get a prompt saying ""Sign in with Apple ID" and asking me to write my password every time i check for new emails. Also i can't edit my email account description.
Please help. It's getting annoying.
MacBook Pro with Retina display, OS X Yosemite (10.10.3)