>>>I tried to follow your instructions and I could not find where you set the acronyms on.
>>>
>>>>I see you are PUTM. Go to PUTM settings of your account and check "Enable acronyms" under "View message settings"
>>
>>1. Click on Setup button in the toolbar here.
>>2. Click on Settings link on the second paragraph. Bellow the - SUBSCRIPTION - section
>>3. Scroll down until you see "View message settings". It is below "Number of messages before the treeview goes dynamic"...
>>4. Check "Enable acronyms" and press Save button.
>
>Or just move mouse over the Message view setup in the top-right corner of the message. :)

That was my first thought.
But when I moved the mouse It wasn't there :-)
Now I see that it wasn't there just because I was in reply mode :-)