This is really strange. You have no errors in your site so there should be no reason for the icons not to show. Did you witness any other icon missing? Can you please send us your wp credentials? Add them in your profile data. We need to give it a closer look.
Please make sure you have all necessary access rights on theme files. Do you have any redirect rules set up for the site? Ask your host about it if not sure.
Can you send us some ftp credentials too? We need to check the files.
Let us know.
