Not working with ACF PRO v5.8.12

So the problem is that we are using ACF PRO v5.2.8 which is working fine with our api for the post object sub_field. But when we tried the latest version of ACF PRO v5.8.12 then data isn’t getting saved through the API. Is this plugin not supported with the latest ACF PRO v5.8.12?

Here is an example post link https://bookingagentinfo.com/celebrity/tekashi69/ and API payload structure https://documenter.getpostman.com/view/2877026/bookingagentinfo-api/7159GPZ?version=latest#c93642b7-576a-dd30-62ca-715b24a513fc

The page I need help with: [log in to see the link]