Hi there! You posted your question in the non-Technical forum. Are you using Premiere? Once you confirm what application you are asking about, we'll move your question into the correct forum so that you can get an answer.
Moved from the nontechnical Lounge forum to the After Effects Forum.
Nobody can tell you anything without the least bit of info about the effect settings and some screenshots. Presumably you have set the effect to "Use comp settings" and then somehow override this on rendering, which would mean that the effect merely responds to these changes, but otherwise works correctly.