You can acces your settings 24/7 and adjust any parametre:
To modify your URL, you need to edit "creative": (Menu campaign / creative then click on "edit" icon)
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To modify parametres of your campaign (budget, bid, blackli subids...), go to Menu Campaigns / Campaign, then click on the edit icon of the campaign:
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Branded traffic: you cannot edit the targeted domain. If you need to modify the targetted domain, you need to clone your campaign.