On some dialogs, you can open the DevTools console the same as you can do it in the web browser. Just press F12. But you need to activate this function first.
All versions of eWay-CRM
You need to download and run this registry key: https://download.eway-crm.com/regfiles/AllowShowDevTools.zip
When you change the settings, you need to restart Microsoft Outlook.
Now when you press F12, for example in the dialog of registration, you will see this console: