The timing of the crash right after the page change screams delivery and signal shift to me, not just the usual "Meta's broken" narrative.
Key thing here: if CPM and CPC both improved but conversions flatlined, that's a classic sign the traffic quality has changed at the source level. I've seen setups where top-of-funnel metrics look brilliant post-change, but the actual intent behind that traffic is completely different. You're getting cheaper clicks because the algorithm is serving to a broader, lower-quality pool.
The fact that your Google brand campaign also stopped getting clicks makes this even weirder than a standard creative fatigue or audience overlap issue. That points to something deeper - maybe a tracking break that's hitting both platforms, or a real drop in overall demand/visibility.
Before concluding Meta is just serving garbage traffic, I'd dig into what actually changed in the account's signal continuity after the main page suspension. Was there any event loss, pixel remap, or conversion window disruption? That's where I'd start looking.
