Why does Red Hat Access Support and Knowledge commands of redhat-support-tool fail ?

Issue

• Adding attachment to dropbox fails. Dropbox FTP has been deprecated and hence any upload to dropbox using redhat-support-tool will fail.For example:

  Welcome to the Red Hat Support Tool.
  Command (? for help): addattachment -f
  Please provide the full path to the file (or 'q' to exit): /vagrant_data/test_file_rhst
  Compressing /vagrant_data/test_file_rhst for upload ... completed successfully.
  Please provide a case number (or 'q' to exit): 02290113
  Uploading test_file_rhst.gz to dropbox.redhat.com ...     failed.
  ERROR: Problem encountered whilst uploading the attachment.  Please consult the Red Hat Support Tool logs for details.    
  

• For RHEL 7 and RHEL 6 - The commands related to the case management, knowledge access, along with the diagnose command fail to give response and shows - SSLError: tlsv1 alert internal error. For example:

  Welcome to the Red Hat Support Tool.
  Command (? for help): listproducts
  Unable to find products
  Command (? for help): listcases
  tlsv1 alert internal error
  Command (? for help):
  

• For RHEL 8, RHEL 7 and RHEL 6 - commands related to the case management, knowledge access along with the diagnose command fail to give response. For example,

  Welcome to the Red Hat Support Tool.
  Command (? for help): listproducts
  Unable to fulfill request with support services API. Reason: Gone