2.Click on “Add New” under posts section.
3.Enter the title for the post.
4.Then hit “Save Draft” seen in right hand side of “Publish” section.
5.Insert text or images or media files.
6.After inserting the content publish the post.
The above said steps should solve this issue.
Update us with your findings once the above steps are followed while uploading the images.
Refer the snapshots attached.