Oh, I feel this one. Without seeing the full analytics breakdown, it's tricky, but sudden Pinterest traffic drops often point to algorithm changes, indexing issues on the platform, or a cluster of pins slipping from top spots rather than being fully removed. Are you seeing the decline across all boards or mainly a few like product pins versus blog pins?
I'd check the dates against Pinterest update announcements, then compare impressions where saves stayed but average pin position shifted. Reality is these swings rarely have one cause - usually it's content competitiveness and technical signals piling up at the same time.
