It has been several years since I looked at this, so I’m going from memory here.
When the plugin was originally developed, its Settings were portable, in the sense that you could change domain names without having to change the Settings you had created in the plugin.
Over the years, as more features were added, and more themes were supported, portability was sacrificed until portability was totally lost in a redesign.
Bottom line: whenever you change the Site URL, you will almost certainly have to re-enter all of the plugin’s URL-based settings.
Thank you for the quick reply. All of the url’s are correct. Is there any other possibility?
It has been too long since I was involved with this plugin for me to give you “best possible support” type answers, but this is my best shot. I know it sounds stupid, but I have seen it fix otherwise impossible errors:
Make notes of all your settings, double checking that the URLs are correct. Then deactivate and delete the plugin, and reinstall it, and re-enter all the settings.
The reason that this might work is if the plugin stored any Site URL-related info in its settings that are not visible on the settings pages.
