Check the names of the images like this...
Open you league reports in your web browser and open a team page. The right click on the blank space where there should be an image and "View image". Note the URL and see if it includes lower case or upper case letters.
Then on your website, via FTP, open your league reports, /news/html/images folder. Look at the same image and see if there are any differences, especially with regard to upper and lower case letters. If you notice there are differences, that is why the images are not showing up. Simply change the images' names to match what the report pages are looking for and you'll solve your issue.