strange image effect

module shows me pictures squares which parameters should I change so that the picture is clear?

Hi
the first word to start a dicussion would be "hello"
then I think this strange because I have never seen this. Give me your url to see the issue
Ced

sorry, hello.
I'm actually working on my pc, I have not uploaded the site, but the problem seems very curious.
I was thinking that maybe, as some css style, which makes the image look that way.
I will reinstall the module.