Cannot Open Terminal Window in Airmail

[EdenRose]

I had to reload Airmail (I use the HAM/Winlink part) and now I cannot open the Terminal Window. All else works. My Pactor is controlling radio and connects well with my laptop. The FAX, RTTY and other functions work fine. I noted settings from old Airmail and used them again. However neither F6 or hitting Terminal Button will open the Terminal for email sending. Any ideas that can help appreciated. See photo of the button I am speaking of....It is similar to what happens when you have a pop-up blocker. But all other tabs work fine.