tlmit

Thank you for your help.
I had also used the followings plugins:
Contact Form 7 Calendar
Enable Media Replace
Hyper Cache
Lightbox Plus Colorbox
NextGEN Gallery
Post Types Order
Redirection
TinyMCE Advanced
WP Super Cache – Clear all cache
WP Video Lightbox
WP-Mail-SMTP
WP-PageNavi
Yoast SEO

The theme is customized. You can visit our website http://www.finds.com.hk/

Thanks.

Thank you very much.
I will post to that forum for our issue.
Thanks.