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Hi nasser110,

This is a CSS conflict with your theme. You need to insert the following CSS code in your current active theme Stylesheet (style.css) file.  

.wpd-custom-field .wcf-activ-star {
   color: #FFD700 !important;
}

Don't forget to delete all caches, do CTRL + F5 on frontend. 

thanks for your response , but my problem is still exist.

I viewed the code of my page with F12 and inspected that element, but there was no anything in that place (such as numbers and ...). so it seems the problem isn't related to css style.

thanks a lot

Hi nasser110,

Could you please leave your website URL? We'll check it.