Hi AHSoltani888 --
Thanks for reaching out. I pulled up your account and see login attempts using both email addresses on your comcast account. The login errors are happening when trying to sign in with the non-primary email address. You must sign in with the original email address used at the time Xfinity Home was installed. I can private message you with more information.
Thanks for reaching out. I see something on my end that may be causing a sign in issue. I'd like to confirm the email address you are using when trying to sign in. I will private message you for this information. Private messages can be accessed by clicking on the envelope icon in the upper right hand corner of any forums page.