I'm trying to change my URL from https://soundcloud.com/uihtldgsuhstiluhlurehlt (Gibberish after much frustration from many failed attempts at making a unique URL) to https://soundcloud.com/LiquidZulu which doesn't work despite the fact that that URL gives a 404 indicating it has not been previously used. I have also tried many other complex and unregistered URLs none of them work except for pure keyboard spam.
EDIT - A screenshot of the page is here: https://imgur.com/mmc8QjM
Best answer by LiquidZulu
I have found the issue; despite it not telling you-you cannot have a capital letter in your URL.