As this question relates to the dual-fisheye plug-in for THETA V, I am thinking of merging this new discussion with the topic below. The questions are related, but not exactly the same.
The short suggestion is to first refer to the the examples on the this topic (scroll down), then post screenshots and the dual-fisheye image are trying to use (you need to post the image on some place like DropBox or Google Drive due tot he size).