Texture not matching?

Question

Design

I can't solve the problem at all. If you dock the texture in illustrator and rotate it 45 degrees, everything connects fine. The problem is that I don't know how to save the texture at an angle so that it is then normally filled on the site with the background for example.
Everything is fine here, it is joined manually:

This is after saving with a square:

Answer 1

Put 2 squares of texture next to each other and try to dock the source, and then turn it into a pattern.

Answer 2

Keep the square as a pattern, and then rotate it inside the object as you like.
Through the transformation panel. (In the English version I will not say how).