The only reason you would need Livesplit is if the game is on PC and uses a community made script to remove loading times from the run. If that's the case and you don't use a timer, the moderators are supposed to accept your run but with the loading times included. So basically you don't need a timer to submit
If you want a timer for yourself I'm sure splitter is fine although I've never used it myself since I'm on Windows
If I had to guess its probably because your account is less than 2 weeks old. That is just a guess though.
Same server for Outlast 1, Outlast 2, and Whistleblower.
@BattleMooseHat you're allowed to post links on the forums, but a better place to post your discoveries would be in the Dead Space speedrunning Discord community. Here is a link: https://discord.com/invite/BP8TrJ6
I think having the option to opt out/disable the new animation around your icon would be nice. I do like the popout though
the category rules of any% have no restrictions. What is written in the game wide rules applies to all categories