I tried adding Optimum as a source, but a get and error. I can login via their TV Everywhere site, https://www.optimum.net/tv/to-go/
Log snippet:
2019/11/17 12:39:04 [TVE] Auth starting for Cablevision as *******
2019/11/17 12:39:04 [TVE] action=auth mvpd=Cablevision requestor=ABC
2019/11/17 12:39:04 [TVE] action=navigate url=https://sp.auth.adobe.com/adobe-services/authenticate/saml?noflash=true&mso_id=Cablevision&requestor_id=ABC&no_iframe=true&domain_name=adobe.com&redirect_url=https%3A%2F%2Fsp.auth.adobe.com%2Fadobe-services%2FcompletePassiveAuthentication
2019/11/17 12:39:04 [TVE] action=request type=Document method=GET url=https://sp.auth.adobe.com/adobe-services/authenticate/saml
2019/11/17 12:39:07 [TVE] action=wait_for_page
2019/11/17 12:39:07 [TVE] action=request type=Document method=POST url=https://idp.optimum.net/idp.optimum.net/SSOPOST/metaAlias/realm4/idpv2
2019/11/17 12:39:07 [TVE] action=auth_domain domain=idp.optimum.net
2019/11/17 12:39:19 [TVE] action=wait_for_page err=timeout
2019/11/17 12:39:21 [TVE] action=fill_form u=******
2019/11/17 12:39:21 [TVE] action=request type=Document method=POST url=https://idp.optimum.net/idp.optimum.net/UI/Login
2019/11/17 12:39:21 [TVE] action=wait_for_auth
2019/11/17 12:39:33 [TVE] action=auth_timed_out
2019/11/17 12:39:33 [TVE] action=screenshot
2019/11/17 12:39:35 [TVE] action=screenshot_err err=Cannot take screenshot with 0 width. (-32000)
2019/11/17 12:39:35 [TVE] Auth failed for Cablevision: chrome auth_timed_out