Yeah they absolutely made changes, and honestly, if you're still leaning on the Pixel alone you're asking for trouble. The Events Manager is a swamp now-have to whitelist your domain, pad every event with extra parameters, fix a dozen "warnings" that don't mean anything, and turn on Advanced Matching just to stand still.
What most people don't realise is that Meta is progressively gimping the Pixel's ability to match logged-out users. Your site traffic might hit a pixel, but good luck tying that to a Facebook profile without a ton of first-party data passed back. The system prefers the Conversions API now, and if you're not running that alongside the pixel, you're losing a chunk of attributed conversions.
I've seen accounts where reported conversions dropped 30-40% after these updates, but the actual sales in Shopify held steady. The ad account just stops seeing the connection. The diagnostics tab screaming at you isn't a to-do list, it's a warning sign that Meta wants you off the pixel entirely.
Everyone's too scared to say it: the pixel era is dying. Either adopt the CAPI properly or get used to underreporting.
