How to wipe and reset my logged diet data to start over

How to reset my logged diet data
To reset your diet data, you'll have to delete your entire account and signup again as a new member. This is the only way to reset all of your data associated with your diet and profile. You can delete your account from the Menu > Settings > Delete account. If you delete this account, all of your data will be erased from our system. Please note: our team is unable to recover data from a deleted account. 

If you simply want to change your diet goal and set a new target to reach a new goal, you can do this from the Menu > Goals > edit your goals.