You need to edit the configmap of dfc-3e5c91f6-3dfc-45d6-8e9b-f17705e07b4c-kafka-t-psql-historian (the exact numbers might slightly change depending on your umh version). There you will find 3 DSN strings (

dsn: postgres://kafkatopostgresqlv2....

) that you must change. Afterwards restart the bridge pod.