Encryption using 3DES in AS2 connector of wm.io Integration does not work anymore

Encryption using TripleDES in AS2 connector does not work anymore in webMethods.io Integration, Version 10.16.4.0, Free Forever account. A message is send with no payload. It has worked before (May 2023) and it still does work using AES 256.

This is a print screen of https://webhook.site/ displaying the http message received from wm.io Integration as sent by the AS2 connector with encryption using TripleDES (without signing and no mdn requested).