I promise you this is the last update, got a reply back from DS Connected Services regarding what caused the issue.
Apperently the Antenna module has its individual IMEI number, when the module is replaced with a new one, Stellantis need to restart the services to be able to recognize the new IMEI number.
In my case the workshop didnt know about this procedure, but in all other cases the workshop/retailer should create a ticket at Stellantis when they replace the module.
9 days later, everything is working. Connected services (in the app) updates on request and f.ex. when its fully charged.
Not a single issue up until now 
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