Editing your daily goal is available with a Flipd Premium subscription.
From your Flipd home page, under your name, tap on the on the middle panel titled 'Minutes Today'. If you do not have a Flipd Premium subscription, editing this section is locked.
When a pop-up box appears, enter your goal. The value must be in minutes and can be a number between 0 minutes and 1440 minutes (24 hours). As you accumulate minutes during the same 24 hour period, your total will appear here.