Once you see the list of products including
CA Easytrieve Report Generator MVS
please do not click yet to download it.
Instead, please actually click on the name "CA Easytrieve Report Generator MVS" and this will then give you a description of all of the 28 files.
You will then be able to see this one to then select and download:
CA EASYTRIEVE PRODUCT PACKAGE B60000ESA00.pax.Z