(#10) Application does not have permission for this action (10, OAuthException) cant fix

Hi all, i have been having this problem for last 2 weeks I have been on to support and they cant resolve this problem and I see others have had this same problem since 2023.
(#10) Application does not have permission for this action (10, OAuthException)
I want to automate Instagram posting to a business account I have been on Instagram set up business account and linked it to the facebook page and no matter what I do it wont work. i set up crossposting on Instagram the lot and still does any one know how to fix this I has some screen shots on this as well ok thanks[date=2025-03-06 timezone=“Europe/London”]Trying to connect to Instagram for business and getting this error (#10) Application does not have permission for this action