Kafka Connect course - Hands On: Confluent Cloud Managed Connector API - unable to proceed

Kafka Connect Managed Connectors
1

hi, I’m trying to do the Kafka Connect course, and at this lesson Create Confluent Managed Kafka Connectors with the Connect API
a few problems:

  1. step 14 of preparation steps is still not yet updated to the new command syntax for confluent kafka client-config create java(this was raised at Confluent kafka client-config not found)
  2. the endpoint of steps 7,8 of the exercise should be different for every user, not always https://pkc-6ojv2.us-west4.gcp.confluent.cloud:443, it should be taken from the "http_endpoint" from the response of the previous get clusters of environment curl command
  3. the command in step 16 to create a MySqlSinkConnector with "connection.host": "ec2-54-175-153-98.compute-1.amazonaws.com", has given me an error response: "validation_errors": [ "connection.host: Could not connect to database. ...", "ssl.truststorefile: Could not connect to database. ..." ] - this one I do not know how to resolve / workaround

please help…