Cannot Register for Unemployment

I was initially excited that I could do this online, but of course the tech doesn't work.

After connecting to BundID as a guest and authenticating my eID, I get the error:

{"type":"RuntimeException","message":"java.lang.IllegalArgumentException: The provided token does not contain exactly one encrypted Assertion.","code":500,"reason":"Internal Server Error","error_code":null}

Is there any customer support for technical issues? I don't know if this is a BundID issue or a arbeitsagentur.de issue.