Hi @qfviag2aqdva,
Yes, Steam accounts can be unlinked. Saying that, there are risks involved. For example:
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@EA_Help wrote:
Once you unlink a platform account (like Steam) from your EA Account and link it to a new EA Account, you can’t unlink it again for six months. Make sure unlinking is the best choice for you and that you understand the risks before you follow these steps.
Follow our steps if you still want to ...