re: When you first helped me with the plugin last month, it looked like it was behaving the way I needed it to. But now it seems to have changed.
No, this has not changed. When selecting multiple category from the drop down the results are that the entries must be in all selected categories. I tested this on your site and it works as expected.
That said, I see you are now using the category widget. This is not going to be compatible with multiple category search. For example if you click a category link in the widget, the multiple category search is no longer going to work correctly. I believe it is this that is causing you the trouble that you have described.
I’m going to assume you really want to have that category widget… here’s something I think that will work for you since you country categories are not ever likely to change or change very little. This will require a little work. Here’s what to do.
Go to the WordPress Menus admin page (under Appearance) and click the Create New Menu link. Give the Menu a new name and click the Create Menu button.
Click the Custom link menu item. In the URL box add:
In the Link text box add,
Click the Add to Menu button.
Do this for each county. The number at the end of the URL, that is the category ID which can be found on the Connections : Categories admin page. So, as you add counties, you would change the ID accordingly.
As a test, just do a few.
Save the menu and go to the Widgets admin page (under Appearance). There you will find a Custom Menu widget. Add that to the sidebar and select your new custom menu.
Now when you click those links you should be able to still perform a multiple category search and it should work.
Hope that helps, let me know!