Installer might have failed to add the license in the registry, and as a workaround, you can run C:\Program Files\NetApp\WFA\bin\register-system-info.vbs file which will add the missing license in the registry. You need to have administrator privilege to run this file.
I had the same problem with the exports. Was able to solve them via the mentioned workaround. But the same Problem "404, page not found" shows up when I try to download logs. I can see on the WFA that the ZIP gets created but I can not download it via the webinterface.
Copying the WEB-INF and ERROR from "help.war" did not help in the log-download
Solved, i did the same copy action and it worked. (after choosing the right source folder!)