Here’s a quick recovery plan
Loosen your bidding goal (raise CPA / lower ROAS).
Switch to Maximize Conversions for 5–7 days to feed the system data.
Add new creatives — video or image assets help trigger fresh learning.
Avoid daily edits. Let it stabilize for a week after any change.
Double-check app policy & store listing — a flag or metadata issue can quietly restrict visibility.
After a few days of consistent conversions, you’ll usually see impressions and spend bounce back.