Newest iPad not showing Mail body

I posted a note yesterday regarding my iPad and iMac not showing the body of the mail sent to me, just the title in the column where that is show, but not the body of the letter in the next column. Now I have discovered that my older iPad is showing all of the mail information including the body of the letter, which the iMac and newer iPad are not showing. This problem just started yesterday and is still ongoing today. Any ideas as to what I should check to get the body of the letters shown on my iPad and iMac.