Error 2811-6058 means "You cannot redeem codes right now due to multiple input errors within a short period of time." This is a temporary lockout triggered by entering an incorrect code too many times. To fix it: stop trying immediately, wait 15 to 30 minutes, then try again. Before retrying, check your code carefully — Nintendo codes are 16 characters and never use the letters I, O, or Z. If you received the code digitally, copy and paste it instead of typing to avoid typos. If the error persists after waiting, try redeeming through the web browser at ec.nintendo.com/redeem instead of the console.