What browser are you using when you connect ?

Whilst these types of trading site may not strictly follow http protocol, but the web shield proxy is expecting http protocol. If you aren’t using a browser, but the sites software, if it is using http ports, etc. the web shield will try to redirect the traffic through its proxy.

You could try:

  1. avastUI > Settings > Troubleshooting > REdirect Settings - WEB - Ignored addresses: and add the IP for your trading station/site, etc.

If that doesn’t work.
2. avastUI > Settings > Active Protection - Web Shield, click the sprocket icon (settings) - Main Settings and check the ‘Scan traffic from well-known browser processes only.’