How to remove Lose It account

Log in to your account.
Then, click settings and go down to account information (https://loseit.com/#Settings:Account%20Information^Account%20Information), then click close account and confirm.

OR
Visit LoseIt.com > Sign in > click Settings (gear icon in top right) > Account Information > Close Account. You will also need to delete the app to remove all data from your device(s).