Hello again Cascadex, the camera rotate the model around the Vertical axis passing from the center point of the model, if the center point of the model is not set correctly you will face such issue, the goal of the add-on is to help users export sprite animation from several angles.
I think when you click setup camera every thing is inside the camera, but when you click export, the model get out of camera view once rotated right ?
If this is the case please set the center of your model correctly and then retry.