Authentication for Shelly Plus 1PM with http request node fails

General
1

I try to control a Shelly Plus 1PM from within Node-Red via a http request node. This node looks like this:
Method: GET
URL: http://192.168.xxx.xxx/rpc/Switch.GetConfig?id=0
Payload: ignore
Basic Authentication: Type=Digest, username und password are filled in

Whatever I try, I always get 401. The only request that works is with this URL:
http://192.168.xxx.xxx/rpc/Schedule.List

Can someone help?

PS: A curl request for http://192.168.xxx.xxx/rpc/Switch.GetConfig?id=0 works, so there must be a problem in the http request node.

2

What is the exact curl you use? (Please xxx out any sensitive info)

3

This is the curl command I use now in an exec node instead of a http request node which works:

curl -s --digest -u : http://192.168.xxx.xxx/rpc/Switch.Set\?id=0\&on=true\&toggle_after=7200