I'm trying to set up to sell my first game on Itch but I'm immediately stumped by being asked to enter the name or entity I'm doing business as. Do I have to put my legal name here? I write under a pseudonym and don't want my legal name to be displayed anywhere - can I put the pseudonym here? Can I put my "brand" here? I am in the EU and I have a business license in the Czech Republic but I have not registered any business names. Do I have to make some kind of legal registration to do business under a brand name? I'm only expecting to make a few dollars/euros out of this, so the idea of paying a lawyer to set up a full business seems a little extreme. I had no idea it would be so complicated to set up an account to sell on here. Thanks so much to anyone who can help me sort this out. My game is ready to go, but I have no knowledge of the business side of things.

EDIT: Also, does the name I put in this tax interview form ever appear anywhere publicly? Or am I safe to put my legal name there knowing it will only be viewed by the tax information processor? Thanks!