• 1 Use the Finder to open the file:
  MM3-WebAssistantProfessional/config/certificate/MM3-WebAssistant.cer

  Note

  The file only exists, if the WebAssistant was already running.

• 2 Click on OK

• 3 Select the certificate MM3-WebAssistant CA Root
• 4 Select tab Attributes
• 5 Select: When using this certificate Always Trust

Please, check this settings now:
http://127.0.0.1:8080/httpsProxyConfiguration
You need the WebAssistant - Proxy Offline Browser for this check.