confusion with usernames and passwords. Need help.

user_fba59c Thank you so much for using our Forums and our team is here to work together to make sure you get the help you need for your account. To get started can you please send us a DM with your full name and service address? 
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• Click "Sign In" if necessary 
• Click the "Direct Message" icon (upper right corner of this page) 
• Click the "New message" (pencil and paper) icon 
• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list 
• Type your message in the text area near the bottom of the window 
• Press Enter to send your message