I can see the problem. You have used categories and tags twice.

You can use a particular Taxonomy (or Category/Tags, each Taxonomy and each Custom Field) only once in the form. You would need to make additional custom taxonomies. This post tries to explain this a bit better (you can use a plugin to switch category terms from category to any new taxonomy that you make, so it is not so hard to do). It is a really awful preachy lecture I wrote:

https://support.searchandfilter.com/forums/topic/multiple-categories-combination/#post-55166

Sorry about the tone, but the message is right and it links to good plugins (except taxonomy switcher I think).

You will need to make two new taxonomies for Countries and Resources. Then you will need to move the terms to the appropriate taxonomies, and then you will need to switch the form elements over to use these.

You would need two plugins installed:

Custom Post Type UI, or some other way to make the taxonomies (do you already have such?)
Taxonomy Switcher (only to switch the terms, then you can remove this plugin).