Breezeline as Online Biller

According to https://www.cabletv.com/breezeline "Breezeline and Atlantic Broadband are the same company. In January 2022, Atlantic Broadband changed its name to Breezeline."

If Breezeline forgot to change their setup with Quicken or Intuit and did not notify them of the name change, their IT department probably should do so soonest possible.

There is an online biller "Atlantic Broadband ..." available in Quicken.
You can give that one a try, but I recommend to avoid Quick Pay until the name issue has been resolved. Meanwhile logon directly to the biller's website and authorize them to direct debit (aka PAC Draft, Autopay, APS, etc.) the next and perhaps all future payments from your checking account or a credit card. The biller will do all the work for you and make an electronic debit on the due date and you don't have to worry about being late.

In Quicken just record a scheduled reminder which does not execute as an online payment into your account register on or before the Due Date and before you download transactions from the bank or credit card containing the payment transaction. That will allow Quicken to match your register transaction to the downloaded data and not cause any further issues.