It doesn't make sense to load the website and get "upload successful" when you haven't done anything yet, change it to "Standing by" or "Upload your replay here!". After you've uploaded anything you can change the text according to what happened. Honestly the state of it is not fit for release as you do not know any progress whatsoever. Don't make people wait for something which may not work at the endThanks for the advice.
I've already made hours of test and my website is working like it should.
What it lack is some secondary functionalities but that doesn't prevent players to use the website.
NB : Like you said, "it is not fit for release". It's much like a beta release for now (I've edited the title to warn players)