Im not entirely sure what "clan management software" is, it might be a good idea to have an about page just to explain what its all about!
Its a very strong design! As far as criticisms go, first thing that caught my eye was that "management systems" in the logo is a bit too dark for a black background. I found it hard to read being that small and dark. I'd maybe lighten up that purple a smidge to make it a bit more eligible.
Also the side arrow(s) for the carousel/slider on the homepage are super dupertiny.