Concern moved here to the proper help section, and for greater exposure to the Comcast corporate employees (The Digital Care Team) for assistance. 

Hello @user_2f550a and thank you for reaching out to us about your service. I would be reaching out if I was not able to login too! Please feel free to send us your full name and complete address in a Direct Message: 

(Full credit to @BruceW for this excellent explanation!) 

"Search for Xfinity Support" won't work. To send a "Direct Messaging" message to Xfinity Support:

• Click "Sign In" if necessary

• Click the "Direct Messaging" icon or https://comca.st/3E83yuE

• Click the "New message" (pencil and paper) icon

• The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there

•  - As you are typing a drop-down list appears. Select "Xfinity Support" from that list

•  - An "Xfinity Support" graphic replaces the "To:" line

• Type your message in the text area near the bottom of the window

• Press Enter to send it

See https://comca.st/3y60HPf for an example.

I am experiencing the same issue. I also do not see an option to create a direct message to support -- only the bell and the user icon.

I have also run into this roadblock.

For some reason I am trying to become an Xfinity customer (what am I thinking, right?),

and the first step was to create an account & login (haven't completed the purchase yet).

At login I am automatically redirected from the main account page to

  'https://customer.xfinity.com/?beta=1' (are you testing beta software on us?).

That page will not load: 'Hmm, the page didn't load correctly'

Using an up-to-date Google Chrome (Mac, 106.0.5249.91) I see many errors in the log:

Refused to load the script 'https://www.clarity.ms/tag/uet/5280002' because it violates the following Content Security Policy directive: "script-src 'self' 'unsafe-inline' 'unsafe-eval'
Refused to load the image 'https://analytics.twitter.com/i/adsct?bci=3&eci=2&event_id=d91d4541-37e9-4a44-8747-5269995f7a84&events=%5B%5B%22pageview%22%2C%7B%7D%5D%5D&integration=advertiser&p_id=Twitter&p_user_id=0&pl_id=5e573737-941c-415c-8c53-ea62036863b1&tw_document_href=https%3A%2F%2Fcustomer.xfinity.com%2F%3Fbeta%3D1&tw_iframe_status=0&tw_order_quantity=0&tw_sale_amount=0&txn_id=nuptm&type=javascript&version=2.3.27' because it violates the following Content Security Policy directive: "img-src 'self'

- lots of '400 Unauthorized: Missing Authorization header' errors

I'm not sure how to proceed in joining this happy Xfinity family.