I'm not exactly aware of who you really are, but I do have some things that others have mentioned that I will bring up.
Even if you were a previous member of staff, it doesn't mean you shouldn't at least be able prove some type of dedication and willingness towards the server, as your activity really needs some work.
Then there's also the issue about your application, it appears like English isn't your main language, so I can understand there being a bit of a language barrier, but your application looks really bare bones, and if you pair that up with your current activity, you don't really have much to show for you wanting to really return to being a member of this staff team.