How to post a message on the wall in the Vkontakte group?

Question

JavaScript

Task: I develop applications for the community, where any user enters the application, fills in the fields and sends it for moderation for publication on the group wall.
What is ready? - For the desktop version, I use the wall.post https://vk.com/dev/wall.post method. Before the message is sent, a send confirmation window appears.
What is necessary? - For the mobile version, this method does not work, because no confirmation popup. But they advised to use the method https://vk.com/dev/community_apps_docs point 2.6. But this option will not work.
Advise me how to solve and complete the task!

Answer 1

Why post on behalf of the user? Post on your behalf from the backend using a personal token for a standalone application.