There are two ways to change your emotion: right-click on your avatar, or use the F1-F4 keys. Both are part of Full Tilt's software, you don't use any other program. If neither of these are working, I would e-mail FT support.
And then wait weeks for a totally useless response.
My advice is to get off that piece of SHIT site. Its just problem after problem after problem after problem after problem after problem after problem after problem after problem after problem after problem after with fulltilt.