@Movin
Dear Movin
I think all coding and changes to my theme are confused, now the slider doesn’t show up, the footer widget area doesn’t show.
I deleted the theme, and child theme, and reinstalled it, but custom css codes didn’t get removed, I was enjoying your theme, but everything got messed up. 
url: shavandi.com
Hi @shavandi.ir,
I hope you are well today and thank you for your question.
I visited your shared site but didn’t see the slider and footer widget area markup in it.
Please make sure you have configured the slider correctly as described on the following page and added widgets in the footer widget area.
If you have configured it then please share the screenshot of your configuration.
Best Regards,
Movin