You don't have access to Xfinity WiFi hotspots

I have active, paid Xfinity Internet at my home and the modem works fine. But when I sign in to a public xfinitywifi hotspot with my Xfinity ID, it tells me I don't have active Xfinity service and won't let me connect.

I used to have two Xfinity accounts at two addresses. I closed one of them, and the hotspot problem started right after that. My best guess is that my Xfinity ID is still linked to the closed account, so the hotspot authentication is checking that stale record instead of my active service.

What I've already tried:
- "Forget" the xfinitywifi network on my device and re-entered my Xfinity ID/password fresh
- Confirmed I'm using my primary Xfinity ID, not a secondary one
- Checked my linked accounts page

This looks like a backend account fix (removing the closed address or re-linking my ID to the active account) that I can't do myself.