WP Fusion Mautic Setup Problem

Hey verygoodplugins,
amazing tool you have – but I cannot use it so far. When I use my base URL (https://mautic.xxxx.de) in the Setup of WP Fusion Lite, I get no connection, despite having set up
> API and
> Basic HTTP
according to your description.

When I enter /s after the URL – I get a connection, but it get the error:

“Error: The field user_email must be enabled for sync”
-> can you help? I don’t understand, where that comes from….

simultaneously WP Fusion also does not import the Field Labels from my Mautic….
so somewhere there is a mistake!

thx in advance for your help for what seems to be just the right plugin I needed!