Can I Re Order Categories & Posts?
You need to select your own format there from the Theme Options > Banner Settings > To set which listing category will be shown first, If that does not work then you need to use
Why Theme Options Showing WP-Admin-ajax Error ?
There are some File Permissions which are required to be set from your hosting server end like for Read, Write and Execute might be possible they have blocked/restricted the permission to run ajax which is
Do You Provide Support for External Plugins Support ?
We are pleased to help you out in the theme support as we are offering for you, We are here for the support assistance for the theme existing features and responsible if something, as advertised,