Thank you for this feedback! In order to be able to verify more than one email address at a time, you will have to select the "enter" key on your keyboard and it should allow you to verify more email addresses on your My Settings page.
I apologize for the issue of verifying multiple email addresses at a time in your account. I am seeing three email addresses verified on your account, if you still need to verify more please call in to our Support. Members of our support team are happy to assist in verifying multiple email addresses.