If there has no shown in message view, it's what you should check.
If you can see nothing on the screen of the email message, here's what you should check:
1. Have you ever tried to run the following command in the MENU(the top-right) > Sanitize contents?
2. Have you ever tried to run the following command in the MENU(the top-right) - Redownload message?
3. Please send the message as EML file to us after reading the following link (how to save EML and sent it).