HI Johny, I am sorry to hear that.
Regarding the shown issue, it is the general photogrammetry problem called a banana effect: Tutorial: Banana Effect - What To Do If My Model is Bent
Basically, one line is not good enough to align the image properly. To solve it properly, that part should be captured at least in a grid.
I suppose you will need to have bigger image groups to align all data properly.
Regarding to the merging component, what is the capture angle between those components? Is it under 30 degrees? How do those images with placed control points look?
I think you will be able to find someone in the Facebook CapturingReality Arena’s page: Redirecting...