$1936

What repeating ? What should I do ?
I changed only colors not arrows, and added more. I added knots to be identical with the model and still cannot save it and I don't know what is

First of all: changing colors of an existing pattern doesn't make it a new pattern. It's not allowed to save a pattern like that to our site, you can only make a screenshot and save it to your own computer, for your own use. The same goes for a few knots change.

When you create a new pattern, the colors on the top and bottom have to be the same. That's how our generator works. Some older patterns are not repeating. They were made on an old generator.