Files shown as disabled in dropbox chooser

I am trying to use the dropbox chooser to upload files. The dropbox chooser popup shows all options as disabled

 

here are my options

 

 

 

const options = {

  //@ts-ignore
  success: function(files) {
      alert("Here's the file link: " + files[0].link)
  },

  cancel: function() {
    console.log('cancelled')
  },

  linkType: "preview", // or "direct"

  multiselect: false, // or true

  extensions: ['.pdf', '.doc', '.docx'],

  folderselect: false, // or true

  sizeLimit: 1024, // or any positive number
};