CBS.com not working

[lincalinca]

Checklist

• [X ] I'm reporting a broken site support
• [X ] I've verified that I'm running youtube-dl version 2020.01.24
• [X ] I've checked that all provided URLs are alive and playable in a browser
• [X ] I've checked that all URLs and arguments with special characters are properly quoted or escaped
• [X ] I've searched the bugtracker for similar issues including closed ones

Verbose log

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--proxy', '206.189.182.197:8118', '--verbose', 'https://www.cbs.com/shows/grammys/video/4pWVjGauwrc_CNuLFaEiXJc45uWx7iiV/the-62nd-annual-grammy-awards/']
[debug] Encodings: locale cp1252, fs utf-8, out utf-8, pref cp1252
[debug] youtube-dl version 2020.01.24
[debug] Python version 3.7.3 (CPython) - Windows-10-10.0.18362-SP0
[debug] exe versions: ffmpeg N-91646-g78d4b6bd43, ffprobe N-91646-g78d4b6bd43
[debug] Proxy map: {'http': '206.189.182.197:8118', 'https': '206.189.182.197:8118'}
[CBS] 4pWVjGauwrc_CNuLFaEiXJc45uWx7iiV: Downloading XML
ERROR: Unable to download XML: HTTP Error 503: Too many open connections (caused by <HTTPError 503: 'Too many open connections'>); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
  File "c:\users\REDACTED\appdata\local\programs\python\python37\lib\site-packages\youtube_dl\extractor\common.py", line 627, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "c:\users\REDACTED\appdata\local\programs\python\python37\lib\site-packages\youtube_dl\YoutubeDL.py", line 2237, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "c:\users\REDACTED\appdata\local\programs\python\python37\lib\urllib\request.py", line 531, in open
    response = meth(req, response)
  File "c:\users\REDACTED\appdata\local\programs\python\python37\lib\urllib\request.py", line 641, in http_response
    'http', request, response, code, msg, hdrs)
  File "c:\users\REDACTED\appdata\local\programs\python\python37\lib\urllib\request.py", line 569, in error
    return self._call_chain(*args)
  File "c:\users\REDACTED\appdata\local\programs\python\python37\lib\urllib\request.py", line 503, in _call_chain
    result = func(*args)
  File "c:\users\REDACTED\appdata\local\programs\python\python37\lib\urllib\request.py", line 649, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)

Description

Trying to download the Grammys. CBS rejecting. I've tried both --geo-verification-proxy as preference, then --proxy, both being rejected.

[remitamine]

a problem with the proxy you're using.

[lincalinca]

I have tried 15 proxies, and at least 6 of them work for other sites, so no, the proxy is fine.