Authenticating allows you to change your name, increase the minimum payout and update your difficulty as well as configuring notifications.

Authentication is done via the built-in login link for pools in the chia-blockchain software:

Select the 3 dots at the top right of your PlotNFT and click on "View Pool Login Link":

auth chia step 1

Then copy the login link by clicking the "Copy" icon at the bottom of the modal:

auth chia step 2

Finally paste the copied url into your browser and hit enter.

First generate the login link via the get_login_link command:

chia plotnft get_login_link --launcher_id <your launcher id here>

Then copy the login link, paste it into your browser and hit enter.