Hi Elan,
Have you enable the SSL for RFC ADS in logon & security tab.
Also change the path prefix to /AdobeDocumentServicesSec/Config?style=rpc in technical settings.
You also have to exchange the certificate between the ABAP and Java (vice versa)
Also follow the document below
ADS SSL configuration journal I. / ABAP -> JAVA / 640 - 70x
With Regards
Ashutosh Chaturvedi