Refrain from adjusting the ROAS Goal. It is a sensitive lever, and doing so frequently could negatively impact your scale and performance.
The ROAS goal should be input in percentage units, rather than "decimal units". For example, if your goal is 200% ROAS, input "200", not "2".
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Refrain from frequent changes
CPE Bid:
The Bid should be set to your true Day0 CPE (Cost per Target Event) Goal
Change the CPE goal at the Campaign level within "Edit Campaign Targeting"
When you launch a CPE campaign, you should set your bid at your actual goal. Just keep in mind the campaign may overspend on the first day, so please make sure to set a low budget (e.g - $500) until the model has calibrated.
Refrain from adjusting the CPE goal frequently while utilizing CPE Maximize Results with Cap. It is a sensitive lever, and doing so frequently could negatively impact your scale and performance.