Hi Ansh,
Do you found solution of the problem. I am facing similar problem.
I have two type of user
1. ‘Editor’ for reviewing post from backend and relpy to post made by author.
2. ‘Author’ for creating post from frontend.
none of the user can upload file from frontend.
Thanks for your relpy.
I am also facing same problem with same plugin Frontier post.If you have found solution please help me.I am using wordpress deCente theme.
Thanks in advance.