Not able to download image without login and no option of downloading in svg format

I am using Adobe express for my website, I have few queries I want to clarify:

1. After editing my image, while I am trying to download the image, I am not seeing the option to download the image in svg format( only getting png, jpg and pdf option),  what config I should use  to download the image in svg format ?
Below is my current export config:

const exportOptions = [
      {
          id: 'download',
          label: 'Download',
          action: {
              target: 'download',
          },
          style: {
              uiType: 'button',
          },
      },
      {
          id: 'save-modified-asset',
          label: 'Save image',
          action: {
              target: 'publish',
          },
          style: {
              uiType: 'button',
          },
      },
  ];

2. I have setup delayed login configuration in my code, so I am getting login option at time of dowload, is it possible by any means to download the image without login ( via some API as I am already using the api key or some other way of download without login ) ?

const configParams = {
              loginMode: 'delayed',
          };