Perhaps you could give us some more information:
Which of the four newsletter options are you using?
What type of device are you using (windows computer, apple mac, ipad, smartphone etc etc)?
What browser are you using (Internet Explorer, Safari, Chrome, Firefox etc etc)?
Thank you for your response. I am using the HTML Email option. I am using my Windows PC, but it also happens when I use my android smart phone and tablet. I tried it on both Internet Explorer and Firefox. Both have the same result.