Hi Manish-
Apologies for the issue encountered! The green "Refresh and discover environment" message indicates a permissions issue for discovering details of MySQL installation, as the environment user defined must be able to interrogate the OS and determine environment variables in use for that given instance.
The red error in the first screenshot related to the link operation indicates an internal error, in which case a review of logs by our Support organization would be required. I would strongly recommend you open a Support case for further assistance.
Thanks!