Neo4J 4.1.1 Kubernetes - Bolt Connection ERR_CONNECTION_CLOSED

Hello,

we create start our neo4j 4.1.1 on a Kubernetes Cluster in a single istance. We create an Azure LoadBalancer (public) creating a service to enable us to connect to the bolt port

When we try to login via browser we recieve this error:

Here you can find an extract of neo4j.conf:

dbms.connectors.default_listen_address=0.0.0.0
dbms.connectors.default_advertised_address=0.0.0.0
dbms.connector.bolt.advertised_address=neo4j-bolt-devscrum.aipacn.com
dbms.connector.bolt.enabled=true
#dbms.connector.bolt.tls_level=OPTIONAL
dbms.connector.bolt.listen_address=0.0.0.0:7687
dbms.connector.http.enabled=true
dbms.connector.http.listen_address=0.0.0.0:7474

Please anyone can help us?

Thanks a lot!