Constant Contact messages don't display
I have two MacBooks. One macBook does not display Constant Contact email messages while the other displays them completely. At most I get the header or footer "headline" in the message but none of the text or graphics that are built into the message. These messages come to us through two different email addresses and can be seen clearly at our email web sites but the Apple Mail app on one MacBook seems to be the problem.
What am I doing wrong?
MacBook Air