Where is the information that CA PanAudit Plus 3.0 is compatible with z/OS 2.4?

Release : CA PanAudit Plus release 3.0

CA PanAudit Plus is one of the products under the CA Easytrieve family.

CA PanAudit Plus is included in the CA Easytrieve group of products and is therefore compatible with z/OS 2.4 as the following links confirm that CA Easytrieve release 11.6 is compatible with z/OS 2.4:

https://techdocs.broadcom.com/us/mainframe-compatibilites/mainframe-compatibilities.html  
https://ftpdocs.broadcom.com/phpdocs/0/MSPSaccount/COMPAT/zos_compat.HTML

The products of the Easytrieve family are listed on this page:
https://techdocs.broadcom.com/us/product-content/status/support-life-cycle/indexes/ca-easytrieve-and-ca-panaudit-plus-release-and-support-lifecycle-dates.html

Here is a list of all products not in EOS or EOL status currently (January 2020):
...
CA Easytrieve Plus Report Generator for Z/OS and OS/390 - 11.6 / 11.5 / 6.4
CA Easytrieve Simplified Design System (Windows)        - 1.0
CA Easytrieve for Unix                                  - 11.0
CA Easytrieve for Windows                               - 11.1 / 11.0
CA Easytrieve Report Generator for Linux PC             - 11.6
CA Easytrieve Online for OS/390                         - 1.4
CA Easytrieve Online for VSE                            - 1.4
CA Easytrieve Online for VM                             - 1.4
CA Easytrieve for Linux on System z                     - 11.0
CA Easytrieve Plus for VSE                              - 6.3
CA Easytrieve Plus Toolkit                              - 2.0
Easytrieve/IQ                                           - 3.1
EZ/Key                                                  - 3.2C
EZ/ESP                                                  - 1.2
Pan/SQL                                                 - 2.5 (Oracle) / 2.4 / 2.3 (EZIQ only)
Panaudit Plus                                           - 3.0
...
All of the z/OS versions are compatible with z/OS 2.4.