Your evergreen campaign has 4 ads running, but one of them — the Founder Pour video — is driving 84% of sales. That ad works really well. It's also your only winner.
Creatives fatigue. Usually around the 45–90 day mark, performance starts to slide. When that happens, the campaign loses most of its revenue overnight because there's nothing behind it. The fix isn't to pause the hero — it's to film 3–5 variations of the same hook over the next month so you have backups ready.