EU login broken

[carsten19]

• Endpoint: https://awsapi.future.smart.com/login-app/api/v1/authorize?uiLocales=de-DE
• Region: EU
• Error: 403 ForbiddenException

I am trying to authenticate for a German Smart #1, also tried manually with an App-User-Agent + HTTP/1.1 but the requests get rejected.
Same issue with the original repo.
So probably one of those:

• the x-app-id SmartAPPEU is not valid anymore
• Additional headers are needed
• the endpoint /login-app/api/v1/authorize was changed