The Apple email ID get disabled for security reasons but you can always reset disable email ID using these following steps. It is very easy to reset disable email ID; you just have to follow these steps.
When email id disabled, you can try to reset it using browser. Click on the reset now and reset your email id.
Once you reset it then try to log-in it with same user id account and see if you are able to log-in or not.
If the problem still exists then you must contact the service provider.