Problem sending emails – the contact list doesn’t come up correctly when I type in a name and it won’t let me write in the message or send it

When I begin entering an email address to someone -- the contact does not come up the same way it used to. Instead the contact name comes up but in much smaller script that it usually is and enters several addresses on the same line. When I try to write in the message area it won't work and it won't send the email out.