Text in forms not appearing after sent by email

Hi,

I've been having a horrible time working with Acrobat lately. I'm working for a clothing company and have to make an order form that has to be able to be emailed to customers, filled out and saved, then emailed back to us. I filled out the "price" column in Acrobat and made sure it was Read-Only. However, when this file is sent to customers, they claim that the figures in the Price column are not appearing.

I am using the latest version of Adobe Acrobat Pro on a Mac OS Leopard. I have enabled Reader Extended Features.

At one point, I sent the file to my employer and he inputted some random numbers into the other columns (the ones meant to be used by customers) and he sent it back to me, as well as his business partner. Not only did the prices not show up, but those numbers too were not there. However, I noticed I could see the numbers once I clicked their form field. But, the same file was sent to another employer, and he said he had no trouble seeing all the figures. I'm not sure whether he is using Reader or Acrobat but I am using the latest Acrobat Pro and am not seeing the figures.

What have I done wrong? I've scoured the properties menu, changed fonts in case of compatibility issues, etc.

Any input would be appreciated. Thank you!