Basically the Options is running well. I can see that your hosting config is always need FTP permission to make some changes in hosting directory.
Please try make some changes in your WordPress Config by following this instruction. http://www.hongkiat.com/blog/update-wordpress-without-ftp/
Then try to refresh the option page, make some changes and open your site.
If still doesn’t help, please contact the hosting support to activate the directory permission to allow WordPress install plugin & themes without asking the FTP information.