People stopped swiping up on an ad

Snap audiences tire of a creative fast. When the swipe-up rate halves against the weeks before, the ad needs a new version.

Fires when: An ad's click-through rate over the last 7 days is under 50% of its rate over the 21 days before, on 2000+ impressions in each.
What to do: Instructions: refresh the ad's creative.
How the impact is estimated: Not quantified: what a fresh creative wins back is not known in advance.
Platform: Snapchat Ads
Severity: medium
Looks back: 28 days
Default thresholds (a workspace can change them): before_days: 21
drop: 0.5
min_impressions: 2000
recent_days: 7
Autopilot: Never applied automatically.