Hi,
Exactly which feature of EHP7 are you keen on using? What is the HR renewal package that you are trying to configure? Is the R/3 role that you uploaded, uploaded successfully?
In PFCG tcode, are you able to see role SAP_EMPLOYEE_ESS_UI5_1? You can try uploading this role and follow steps mentioned in below link.
Configuration of UI5 based landing page in HR Renewal 2.0(Initial Shipment)
Role Z_SAP_EMPLOYEE_XX_ESS_WDA_3 is for EHP6 i think...Check out these links:
Employee Self-Service Composite Role - Employee Self-Service (WDA) - SAP Library
Regards,
Navya.