connecting to snowflake with a private key

I'm trying to create a data connector to snowflake using an encrypted private key. The sisense user interface dialog box requests a path to the private key and the passphrase. Tech support sent me the following instructions: 

Please use the following path to store the key file: /opt/sisense/storage/<any sub-folder>​.
You should then insert the full path in the connection settings.

I was uploaded the key using the droppy utility launched in the admin UI but the process still fails with a file not found error. Has anyone gotten this to work? 

If you have gotten this to work, do your users need to enter the passphrase every time? I need a secure, one-time configuration that does not require sharing or storing unencrypted secrets.

Any help would be most welcome!

Willis Johnson

ujet