Not working for me either.
2023/01/13 09:48:38.899601 [TVE] action=auth mvpd=DTV requestor=tceverywhere
2023/01/13 09:48:39.437875 [TVE] action=version product=HeadlessChrome/108.0.5359.126 jsVersion=10.8.168.22 protocol=1.3 revision=@603c1cb86aff29563721da2a6351c0d08865350d
2023/01/13 09:48:39.438380 [TVE] action=navigate url=https://sp.auth.adobe.com/adobe-services/authenticate/saml?noflash=true&mso_id=DTV&requestor_id=tceverywhere&no_iframe=true&domain_name=adobe.com&redirect_url=https%3A%2F%2Fsp.auth.adobe.com%2Fadobe-services%2FcompletePassiveAuthentication
2023/01/13 09:48:39.439404 [TVE] action=request type=Document method=GET url=https://sp.auth.adobe.com/adobe-services/authenticate/saml
2023/01/13 09:48:42.440066 [TVE] action=wait_for_page
2023/01/13 09:48:42.463009 [TVE] action=request type=Document method=POST url=https://idp.dtvce.com/dtv-idp-authn/authn/v2
2023/01/13 09:48:42.463009 [TVE] action=auth_domain domain=idp.dtvce.com
2023/01/13 09:48:42.884810 [TVE] action=request type=Document method=GET url=https://oidc.idp.clogin.att.com/mga/sps/oauth/oauth20/authorize
2023/01/13 09:48:43.244462 [TVE] action=request type=Document method=GET url=https://signin.att.com/dynamic/iamLRR/LrrController
2023/01/13 09:48:50.381492 [TVE] action=page_ready
2023/01/13 09:48:50.381492 [TVE] action=wait_for_page done=true reason=page_ready
2023/01/13 09:48:50.381492 [TVE] action=fill_form [email protected]
2023/01/13 09:48:50.574762 [TVE] action=wait_for_auth timeout=12s
2023/01/13 09:48:50.602727 [TVE] action=request type=Document method=POST url=https://oidc.idp.clogin.att.com/mga/sps/authsvc
2023/01/13 09:48:51.054012 [TVE] action=request type=Document method=POST url=https://api.cld.dtvce.com/idp/login
2023/01/13 09:48:51.568255 [TVE] action=request type=Document method=POST url=https://sp.auth.adobe.com/sp/saml/SAMLAssertionConsumer
2023/01/13 09:48:51.628860 [TVE] action=request type=Document method=GET url=https://sp.auth.adobe.com/adobe-services/completePassiveAuthentication
2023/01/13 09:48:51.628860 [TVE] action=authed
2023/01/13 09:48:51.630257 [TVE] action=cookies num_domains=2 num_cookies=5
2023/01/13 09:48:51.631014 [TVE] action=error_response type=Document error=net::ERR_ABORTED url=https://sp.auth.adobe.com/adobe-services/completePassiveAuthentication
2023/01/13 09:48:53.722291 [ERR] Failed to start stream for ch6155: TVE: Stream Not Available
2023/01/13 09:48:53.768527 [HLS] Couldn't generate stream playlist for ch6155-dANY-ip127.0.0.1: TVE: Stream Not Available
2023/01/13 09:48:53.768527 [HLS] Stopping transcoder session ch6155-dANY-ip127.0.0.1
2023/01/13 09:48:55.157822 [ERR] Failed to start stream for ch6155: TVE: Stream Not Available
2023/01/13 09:48:55.207548 [HLS] Couldn't generate stream playlist for ch6155-dANY-ip127.0.0.1: TVE: Stream Not Available
2023/01/13 09:48:55.207548 [HLS] Stopping transcoder session ch6155-dANY-ip127.0.0.1
2023/01/13 09:48:56.728395 [ERR] Failed to start stream for ch6155: TVE: Stream Not Available
2023/01/13 09:48:56.778773 [HLS] Couldn't generate stream playlist for ch6155-dANY-ip127.0.0.1: TVE: Stream Not Available
2023/01/13 09:48:56.778938 [HLS] Stopping transcoder session ch6155-dANY-ip127.0.0.1
2023/01/13 09:48:59.153032 [ERR] Failed to start stream for ch6155: TVE: Stream Not Available
2023/01/13 09:48:59.175241 [HLS] Couldn't generate stream playlist for ch6155-dANY-ip127.0.0.1: TVE: Stream Not Available
2023/01/13 09:48:59.175241 [HLS] Stopping transcoder session ch6155-dANY-ip127.0.0.1
2023/01/13 09:49:00.695621 [ERR] Failed to start stream for ch6155: TVE: Stream Not Available
2023/01/13 09:49:00.710256 [HLS] Couldn't generate stream playlist for ch6155-dANY-ip127.0.0.1: TVE: Stream Not Available
2023/01/13 09:49:00.710256 [HLS] Stopping transcoder session ch6155-dANY-ip127.0.0.1
2023/01/13 09:49:03.179099 [ERR] Failed to start stream for ch6155: TVE: Stream Not Available
2023/01/13 09:49:03.244072 [HLS] Couldn't generate stream playlist for ch6155-dANY-ip127.0.0.1: TVE: Stream Not Available
2023/01/13 09:49:03.244072 [HLS] Stopping transcoder session ch6155-dANY-ip127.0.0.1
2023/01/13 09:49:04.743067 [ERR] Failed to start stream for ch6155: TVE: Stream Not Available
2023/01/13 09:49:04.760726 [HLS] Couldn't generate stream playlist for ch6155-dANY-ip127.0.0.1: TVE: Stream Not Available
2023/01/13 09:49:04.760726 [HLS] Stopping transcoder session ch6155-dANY-ip127.0.0.1
Edit: just to be sure I have the latest and greatest, I just upgraded Chrome and retried. That didn't help.
Edit #2: it works on the website