Hi again. Yes, there appears to be quite a lot of errors occurring. Something is interfering with the saving process, using the update_option WordPress function (standard practice).
Screenshot of errors
From here, there isn’t really I can do on behalf of Easing Slider to fix the issue as it doesn’t appear to actually be a bug with the plugin. Something is going wrong with WordPress saving process. This can be a plugin conflict, or host issues.
I’d try disabling all of the other plugins you have activated, then re-installing Easing Slider. Make sure it is the only plugin active, and see if it works. If not, try also changing your theme. If you are still having problems, contact your host.
If disabling all of the plugins makes Easing Slider work, carefully re-enable each plugin one-by-one until activating one of the plugins breaks Easing Slider. This is the plugin that is causing the problems. You’ll need to disable it, or find an alternative.