xfinity wifi hotspot access no longer working
I am a comcast business customer. In the past, I have used the same login credentials to access the xfinity wifi hotspots as I do for my comcast business account. When last I traveled (early September) things were working fine. This week, I repeatedly get a "username not found" error, and it tells me that I need to configure my xfinity account from my business account. I contacted the online "chat" help from the comcast business site, and they told me they could not correct it and would escalate the issue. What I received was an automated email with links on how to configure a hotspot.
Can someone please tell me who to contact or how to correct this? needing it to work when next I travel.