After you launch a campaign using Marpipe, you can edit a few things in the campaign. However, there are a few things that cannot be edited or the data will not track properly.
Editable
Placements (ad set)
End date (ad set)
UTM Parameters (ad)
Campaign spending limit (campaign)
Budget - this will affect test duration
Cannot Be Edited
Audience Targeting
Primary Text & Headline
URL
CTA Button