I can not upload images to my pages or my posts. When I try to upload images in my posts are the options "Insert media", "Create Gallery", "Set featured image" and "Insert from URL", but none of the first three options allow me to select any files.
Button to insert the image, which is in the bottom right of the picture, shown disabled. In fact this option list is different than a few days ago had been found by selecting the "Add Media" on any post. When I select the Media Library menu, I can not attach images to posts. Box appears with the titles of the posts and pages, but this box disappears when I want to select one of them. If I try to insert the picture into the post using the File URL, the image disappears when I save the changes.
Some of the pictures in the previous posts are displayed on the website with a larger size and I can not reduce them, but apparently yes I can reduce its size and include them in the upper left of the paragraph when I edit the post.
I really appreciate the help that you can provide me.