Shove installed a launch daemon or agent popup window, what is it? Please check the following screenshot:



Today, I suddenly have this popup window warning. I have no idea what it is.
Basically I have three questions.

(1) Is this BlockBlock app warning? I have no idea how to find which app triggers this warning. Is there a way to find out which app triggers a popup window?

(2) What is this warning about? Does it mean the app fpsaud auto installs something?

(3) Should I Block or Allow? 

Thanks a lot.
To answer your questions in order....


This does appear to be a BlockBlock dialog box.  A quick look at their webpage shows a similar dialog to the one you've posted.





This warning is telling you that Adobe is attempting to install/update Adobe Flash Player
Do you use Flash Player?  If you do, then yes.  If not, you should investigate what is attempting to install Flash Player (what did you download and open up?)


*On a side note, a more pragmatic question you should be asking yourself is "Why, in 2018, are you still using Adobe Flash?"