I am unsure what the best path forward would be, I recommend contacting Steam about your account being stolen and creating a support ticket to see if they can help with account changes made during that time.
It is wise to let Steam know if you experience issues with your account being stolen so they have it on file should other issues arise.
Sorry, a slight misunderstanding. Let me be clearer.
I am unsure what the best path forward would be, I recommend contacting Steam about your account being stolen and creating a NEW WORLD (AGS) support ticket to see if they can help with account changes made during that time.
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