I was using Zero Error lite theme, and wanted to upload images for my slider hence I purchased the full version from your website, Order#1567. However, the full version doesnt have all features as mentioned on your site. I’m unable to see the slider section at all anymore. So I have reverted back to using ZeroError Lite. Could you see if you could enable all features on your Zero Error theme.
The ZeroError Lite theme is build in WordPress customizer whereas the ZeroError PRO version is build in more user friendly Theme Options framework. The PRO theme is very easy to setup, install and customize.