Hello, Plusout,
Thank you for getting in touch with us.
We have enabled an option on your staging, Customizer -> Speed Optimization -> Disable Embeds, as shown in the screenshot https://prnt.sc/YWP9I9v3Al79. Please check if the data is coming in now, and also provide us with the opportunity to verify what data is coming to your API.
Additionally, please update the following plugins https://prnt.sc/ts1W1t2uyUWD.
Kind Regards,
8theme team