I think it has been removed from edelivery.
If you have an environment of 220.127.116.11 installed, you may install it from workspace (click on Links after logging in to workspace and you may be able to see financial reporting studio)
In order to be able to install the FR studio from Workspace, you should have move the installation file to the appropriate foundation folder (I don't recall at the moment).
You must be able to find the installation file of version 18.104.22.168 at the zip file: Oracle Hyperion Financial Reporting, Fusion Edition Release 22.214.171.124.0 either from e-delivery.
In 126.96.36.199 the FR studio is installed by running the installer(installtool.cmd/installtool.sh) and selecting the FR client .Before that you need to have the files downloaded for 188.8.131.52 :
Oracle Hyperion Enterprise Performance Management System Installer
Hyperion Enterprise Performance Management System Foundation Services Release 184.108.40.206.0 Part 1 of 4
Hyperion Enterprise Performance Management System Foundation Services Release 220.127.116.11.0 Part 2 of 4
Oracle Hyperion Financial Reporting, Fusion Edition Release 18.104.22.168.0
Oracle Hyperion Financial Management, Fusion Edition Release 22.214.171.124.0
These are the required files.Currently you will not get these in the Oracle E-delivery. You need to raise a non-technical Service Request for the files with Oracle for these.
Hope this helps.