Have you checked whether those "bot" reports are actually flagging low quality traffic correctly, or just labelling fast bounces as bots?
thing is, a lot of third-party traffic quality tools massively over-classify Meta traffic as bots - especially after the recent in-app browser changes and aggressive preloading behaviour from Meta. What typically happens is the platform fires link click sessions, prefetches pages, or creates ultra-short visits that analytics tools interpret as non-human, even though a decent chunk are real users. The big clue: your CTR still looks healthy but conversion efficiency tanked underneath. that points more toward traffic quality dilution or weak purchase intent expansion, not literal 72% fake bot traffic.
worked with a COD ecommerce account spending about $1.5k/day. One weekend they suddenly got nearly 11k clicks while Hyros and another tracking tool flagged roughly 68% as bots. CTR jumped from about 2.9% to over 5.4%, CPC looked fantastic, but purchases collapsed from around 118 daily orders down to just 27 - same spend. The founder thought Meta traffic had turned completely fake. digging deeper showed most sessions were ultra-low intent mobile in-app traffic with sub-3-second engagement, not automated bots. ATC rate had fallen from 9.2% to just over 2%, email opt-in rate dropped from 14% to under 5%, and Meta had aggressively expanded delivery into weaker audience pockets after conversion signal instability. After tightening placement control, reducing aggressive expansion, refreshing high-intent creatives, and feeding stronger downstream purchase signals back through CAPI, order volume recovered from 27 back above 90 daily purchases within about 10 days. "Bot flagged" traffic ratios normalised below 20%.
So - are your Add to Cart and checkout initiation rates also collapsing right now, or is it mainly final purchase conversion that got wrecked while upper funnel engagement still looks normal?