I have never uploaded a speedrun and I'm wondering:

1. Is it allowed to use a key rebinding tool

2. When i look at the upload page it says Split.io url, I haven't used that, but it is something with timers of spedruns i thingk, is that needed as it already shows the time ingame and how then do i use it?

3. the only difficulty named random seed is legend random seed, are all the others set seed?