2FA not authenticating

I am not able to log on to my umbrella account on my Raspberry pi 4 with ssd. When it asks of for my 2FA (with DUO) I enter it and it says invalid. I have tried ssh’ing into umbrel and running the command to delete the json file. When I do it says permission denied. I have tried on two different computers. How can I delete the authentication so as to get back to my node. Thank you!

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Please Help!