Hi,
I’ve tested this plugin in both development and shipping builds and all the features seem to work just fine. If everything’s set up properly, there shouldn’t be any issue with UI particles not rendering in the packaged game. The only reason why it wouldn’t work, that I can think of, is if your particle systems / materials are not included in the packaged build. If that’s not the case, I don’t know what’s causing the issue, and It’s very difficult for me to help you without more information, reproduction steps, or project files.