To change your authenticator on 𝙍𝙤𝙗𝙞𝙣𝙝𝙤𝙤𝙙, １ー８ ６ ６ー８ ４ ０ー２ ４ ６ ０ you need to navigate to your account settings, find the "Security & Privacy" section, and１ー８ ６