I have a problem with downloading Aster level 1T data. When I try to download Aster level 1T data from the USGS Earth Explorer site it asks me to enter my username and password over and over when I click on download link of my desired product. What should I do?

When I try to download Aster level 1T data from the USGS Earth Explorer site it asks me to enter my username and password over and over when I click on download link of my desired product. 

What should I do?

I have a problem with downloading Aster level 1T data. May I help me? How to download Aster level 1T data while the site https://earthexplorer.usgs.gov/ asks me to import my user name and password over and over when I click on download link of my desired product?

I have a problem with downloading Aster level 1T data. When I try to download Aster level 1T data from the USGS Earth Explorer site it asks me to enter my username and password over and over when I click on download link of my desired product. What should I do?