I am assuming you are using the desktop version, not the server. If so, the directories vary depending on what you select during the installation process. You can always see what has been configured by looking in your site.prop file. This file is always present in the installation directory and almost always in C:\Program Files\Data360Analyze\conf
In this file, there is a key/value pair named ls.appDataDir. This will tell you where your site directory resides. For example:
ls.appDataDir="C:/Users/username/AppData/Local/Data360Analyze/site"
Can you double check you put the SAP files sapjco3.jar and sapjco3.dll in the ls.appDataDir/lib/java?
If this doesn't work, you can always put them directly in the installation directory.
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sapjco3.jar in C:\Program Files\Data360Analyze\lib\java
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sapjco3.dll in C:\Program Files\Data360Analyze\lib\windows-x86-64