Hi. I checked with the server hosting company and they say that “No cache is applied” on my server.
And the problem is still there.
1) Social media icons do not appear in the footer section
2) Social media icons do not appear in “share this” section of blog post.
You can double check with my site: http://www.crossculturalguide.jp/
FYI, wordpress virsion is 4.4 and php version is 5.3
Thank you for your attention to this matter.