Can't login to QGIS Cloud plugin - QGIS 3.8 OSX 10.13

I have a QGIS cloud account (free) and login via the web-page, so I think my access is fine.

But when I try to login via the QGISCloud plug-in via QGIS Desktop on my MacBook, I get Python Errors.

My QGIS desktop app detail:

This is the Python Error log:

2019-10-24T06:32:47     WARNING    Traceback (most recent call last):
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/urllib/request.py", line 1317, in do_open
          encode_chunked=req.has_header('Transfer-encoding'))
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/http/client.py", line 1229, in request
          self._send_request(method, url, body, headers, encode_chunked)
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/http/client.py", line 1275, in _send_request
          self.endheaders(body, encode_chunked=encode_chunked)
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/http/client.py", line 1224, in endheaders
          self._send_output(message_body, encode_chunked=encode_chunked)
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/http/client.py", line 1016, in _send_output
          self.send(msg)
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/http/client.py", line 956, in send
          self.connect()
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/http/client.py", line 1392, in connect
          server_hostname=server_hostname)
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/ssl.py", line 412, in wrap_socket
          session=session
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/ssl.py", line 853, in _create
          self.do_handshake()
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/ssl.py", line 1117, in do_handshake
          self._sslobj.do_handshake()
         ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1056)

During handling of the above exception, another exception occurred:

         Traceback (most recent call last):
          File "/Users/nikhenry/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/qgiscloud/qgiscloudplugindialog.py", line 292, in check_login
          version_info=self._version_info())
          File "/Users/nikhenry/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/qgiscloud/qgiscloudapi/qgiscloudapi.py", line 163, in check_login
          content = request.post(resource, data)
          File "/Users/nikhenry/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/qgiscloud/qgiscloudapi/qgiscloudapi.py", line 569, in post
          return self.request(resource, method='POST', data=data)
          File "/Users/nikhenry/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/qgiscloud/qgiscloudapi/qgiscloudapi.py", line 657, in request
          response = urllib.request.urlopen(req).read()
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/urllib/request.py", line 222, in urlopen
          return opener.open(url, data, timeout)
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/urllib/request.py", line 525, in open
          response = self._open(req, data)
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/urllib/request.py", line 543, in _open
          '_open', req)
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/urllib/request.py", line 503, in _call_chain
          result = func(*args)
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/urllib/request.py", line 1360, in https_open
          context=self._context, check_hostname=self._check_hostname)
          File "/Applications/QGIS3.8.app/Contents/Frameworks/Python.framework/Versions/Current/lib/python3.7/urllib/request.py", line 1319, in do_open
          raise URLError(err)
         urllib.error.URLError: