FTP is ok, thanks. Why don’t you update PHP version? 5.6 version of the PHP will cause issues for you. It’s out of date version.
Also, we face the following error very ofter http://prntscr.com/qf42ll Once we try to open some backend page we get that error first and the page appears only after reloading. Could you, please, fix it also? Because it missing impossible to update the theme with such loading of the backend.
