Was afraid this would happen.
I installed a new Channels DVR using the new Synology DSM 7.0 package.
First thing I did was update to the latest prerelease v2022.01.25.0145 even before selecting the recording directory.
It's failing at NBC.
Logs
2022/01/26 18:41:45.650848 [TVE] Auth starting for Comcast_SSO as UserName
2022/01/26 18:41:45.650997 [TVE] action=auth mvpd=Comcast_SSO requestor=nbcentertainment
2022/01/26 18:41:45.652960 registry.ping url=https://registry-1.docker.io/v2/
2022/01/26 18:41:46.983978 registry.manifest.get url=https://registry-1.docker.io/v2/chromedp/headless-shell/manifests/89.0.4389.114 repository=chromedp/headless-shell reference=89.0.4389.114
2022/01/26 18:41:47.863340 registry.blob.download url=https://registry-1.docker.io/v2/chromedp/headless-shell/blobs/sha256:1633fec4c8941cfbdde74459550ed95d255878d91ee08fb5894627cdf046fca0 repository=chromedp/headless-shell digest=sha256:1633fec4c8941cfbdde74459550ed95d255878d91ee08fb5894627cdf046fca0
2022/01/26 18:41:53.287701 registry.blob.download url=https://registry-1.docker.io/v2/chromedp/headless-shell/blobs/sha256:f04fd593031a9b736187fbfac2f8e72fbe68bc9d65ca2eaeedf9f618e255d658 repository=chromedp/headless-shell digest=sha256:f04fd593031a9b736187fbfac2f8e72fbe68bc9d65ca2eaeedf9f618e255d658
2022/01/26 18:41:54.977779 registry.blob.download url=https://registry-1.docker.io/v2/chromedp/headless-shell/blobs/sha256:71120124a9d579b544ff09506c59a81f5548dd2f19b278622307af04ef29e189 repository=chromedp/headless-shell digest=sha256:71120124a9d579b544ff09506c59a81f5548dd2f19b278622307af04ef29e189
2022/01/26 18:42:03.253744 registry.blob.download url=https://registry-1.docker.io/v2/chromedp/headless-shell/blobs/sha256:5af79d440e20791028323fc0d80605674d6442a23dc49909a362e9f94b22cae4 repository=chromedp/headless-shell digest=sha256:5af79d440e20791028323fc0d80605674d6442a23dc49909a362e9f94b22cae4
2022/01/26 18:42:05.215896 [TVE] action=error_response type=Other error=net::ERR_UNKNOWN_URL_SCHEME url=
2022/01/26 18:42:05.221426 [TVE] action=version product=Chrome/89.0.4389.114 jsVersion=8.9.255.24 protocol=1.3 revision=@1ea76e193b4fadb723bfea2a19a66c93a1bc0ca6
2022/01/26 18:42:05.223717 [TVE] action=mock
2022/01/26 18:42:05.243860 [TVE] action=navigate url=https://sp.auth.adobe.com/adobe-services/authenticate/saml?noflash=true&mso_id=Comcast_SSO&requestor_id=nbcentertainment&no_iframe=true&domain_name=adobe.com&redirect_url=https%3A%2F%2Fsp.auth.adobe.com%2Fadobe-services%2FcompletePassiveAuthentication
2022/01/26 18:42:05.247096 [TVE] action=request type=Document method=GET url=https://sp.auth.adobe.com/adobe-services/authenticate/saml
2022/01/26 18:42:05.778547 [TVE] action=request type=Document method=GET url=https://oauth.xfinity.com/oauth/authorize
2022/01/26 18:42:06.234296 [TVE] action=request type=Document method=GET url=https://login.xfinity.com/login
2022/01/26 18:42:06.234447 [TVE] action=auth_domain domain=login.xfinity.com
2022/01/26 18:42:06.520838 [TVE] action=wait_for_page
2022/01/26 18:42:15.141472 [TVE] action=page_ready
2022/01/26 18:42:15.141574 [TVE] action=wait_for_page done=true reason=page_ready
2022/01/26 18:42:15.840449 [TVE] action=fill_form u=UserName
2022/01/26 18:42:15.846272 [TVE] action=tvejs msg="xfinityLogin: wait"
2022/01/26 18:42:15.846410 [TVE] action=retry_form
2022/01/26 18:42:16.554083 [TVE] action=wait_for_auth
2022/01/26 18:42:16.589904 [TVE] action=request type=Document method=POST url=https://login.xfinity.com/login
2022/01/26 18:42:23.495456 [TVE] action=page_ready
2022/01/26 18:42:23.495594 [TVE] action=retry_form step=auth_form count=1
2022/01/26 18:42:24.158454 [TVE] action=fill_form u=UserName
2022/01/26 18:42:24.162355 [TVE] action=tvejs msg="xfinityLogin: wait"
2022/01/26 18:42:24.162455 [TVE] action=retry_form
2022/01/26 18:42:24.864535 [TVE] action=wait_for_auth
2022/01/26 18:42:24.892348 [TVE] action=request type=Document method=POST url=https://login.xfinity.com/login
2022/01/26 18:42:32.169424 [TVE] action=page_ready
2022/01/26 18:42:32.169532 [TVE] action=retry_form step=auth_form count=2
2022/01/26 18:42:32.964449 [TVE] action=fill_form u=UserName
2022/01/26 18:42:32.968465 [TVE] action=tvejs msg="xfinityLogin: wait"
2022/01/26 18:42:32.968556 [TVE] action=retry_form
2022/01/26 18:42:33.643510 [TVE] action=wait_for_auth
2022/01/26 18:42:33.672561 [TVE] action=request type=Document method=POST url=https://login.xfinity.com/login
2022/01/26 18:42:40.869446 [TVE] action=page_ready
2022/01/26 18:42:40.869561 [TVE] action=retry_form step=auth_form count=3
2022/01/26 18:42:41.433444 [TVE] action=fill_form u=UserName
2022/01/26 18:42:41.448675 [TVE] action=tvejs msg="xfinityLogin: wait"
2022/01/26 18:42:41.480166 [TVE] action=retry_form
2022/01/26 18:42:42.111342 [TVE] action=wait_for_auth
2022/01/26 18:42:42.139775 [TVE] action=request type=Document method=POST url=https://login.xfinity.com/login
2022/01/26 18:42:49.370443 [TVE] action=page_ready
2022/01/26 18:42:49.370535 [TVE] action=retry_form_failed
2022/01/26 18:42:49.370573 [TVE] action=screenshot
2022/01/26 18:42:49.640181 [TVE] action=screenshot size=32427
2022/01/26 18:42:49.640599 [TVE] action=capture_html
2022/01/26 18:42:49.653211 [TVE] action=capture_html size=42822
2022/01/26 18:42:49.653695 [TVE] action=screenshot
2022/01/26 18:42:49.928727 [TVE] action=screenshot size=32427
2022/01/26 18:42:49.953150 [TVE] action=capture_html
2022/01/26 18:42:49.963309 [TVE] action=capture_html size=42822
2022/01/26 18:42:49.963915 [TVE] action=screenshot
2022/01/26 18:42:50.241042 [TVE] action=screenshot size=32427
2022/01/26 18:42:50.264252 [TVE] action=capture_html
2022/01/26 18:42:50.274340 [TVE] action=capture_html size=42822
2022/01/26 18:42:50.274919 [TVE] action=screenshot
2022/01/26 18:42:50.560594 [TVE] action=screenshot size=32427
2022/01/26 18:42:50.585106 [TVE] action=capture_html
2022/01/26 18:42:50.595119 [TVE] action=capture_html size=42822
2022/01/26 18:42:50.795452 [TVE] Auth failed for Comcast_SSO: Cable provider authentication failed
Verified I could login and strean at nbc.com/live and tried again. Same problem.
Diagnostics submitted as af1dca7a-f3fa-4282-adc9-b8467469d84d
Restarted the Synology package and still same problem.
Clicked and Held the Login button, no help, same problem.
And finally tried a Private tab in Brave browser connecting with secure https. Same problem.
Latest diagnostic logs submitted 11a1ba1f-c417-4d98-82cd-798303efcdcf
Reinstalled using v2022.01.21.2357 and still doesm't work. Giving up for tonight.