Hello,
I’ll be happy to help you troubleshoot this issue, if you are interested.
If the drag and drop is not working… then you may have another plugin which is loading javascript on all admin pages.. which may be interfering.
The best way to test would be to quickly deactivate all other plugins. Then, go back to the WP Edit settings page.. and see if you are able to successfully move buttons around.
If you can, you know another plugin is interfering.
Again, I’ll be happy to help you with this. Just let me know.