This issue is resolved. Between 12:00 and 12:30 UTC, some accounts saw incoming platform events and WhatsApp messages arrive late, and some events received in that window may have been lost. If a message from that window never arrived, ask the sender to resend it. No other action is needed on your side.

Since 12:00 UTC, some accounts may see incoming platform events and WhatsApp messages arrive late, by up to 20 minutes, and some events received between 12:00 and 12:30 UTC may have been lost. We found the cause, an issue on our side, and a fix is live while delays clear. If a message from that window never arrived, ask the sender to resend it. Next update within 60 minutes.