I think you’ll have to ask the developers of Beaver builder on how to update posts via the API for themes created using their software, unless you can provide access to your Wordpress dashboard and database, which is not advisable on this forum.
Private Support
You can use the Hire a Pro category to request for private 1-to-1 assistance via video call/screenshare/private messaging/etc. This may help you get your issue resolved faster especially if it is urgent or contain sensitive information. It is important to post your request in the Hire a Pro category, as forum members are not allowed to advertise their services in other categories like here (even if it’s free/unpaid). Posting in the Hire a Pro category will allow other members to assist you over other forms of communication.
How to Message Another User
You can use the private messaging feature to directly reach out to other forum members. To do this, go to your inbox, and click on the “New Message” button on the right.
Alternatively, you can also click on clicking on their username/avatar, then click on the “Message” button in the popup card.
Hope this helps! If you are still having trouble, please provide more details.
— @samliew