We have 2 computers in our home. I can get emails on only one of them lately. The one only shows the blue dots going around and the emails never come up. I have waited up to 15 minutes and finally give up. I can get the emails on my phone also.
On the machine giving you the problem-----------------
Try clearing out your browser's cache/browsing history. When you have done that, close out the browser and re-start it in a fresh session. If that doesn't do it, then try using a different browser.