CorentArt, Yes - I can help you.
I believe you need to mask your images.
This is easier and quicker than it sounds.
In each image, use the "Intelligent Scissors" tool and draw a box around the subject. This can be loose. It does not have to be precisely lined up with the edge of your subject. Subject = that thing that you are trying to make a model out of.
Do this with each and every image. That should take about 10 seconds per image.
Then, in the "Photos" pane, switch to "mask" view. You do this by pressing the blue button at the top of the photos pane that looks like a square donut (for lack of a better comparison). You photos will switch to black and white images.
Right-click on one of these images and select "Invert Masks". A dialog box will pop up. Select "All Cameras" and then hit "Okay."
Now align the images again making sure that you select "Constrain features by mask" in the "Align Photos" dialog box.
If all goes according to plan and this was indeed the reason for your poor alignment, you will now have a sparse point cloud that roughly resembles your model and from which you can proceed to make a model.
The rule is that if your camera is static and there your background is unchanging, you must mask for Photoscan to be able to align.
Good luck with this.
Jon