Problem:

The problem here is that the user wanted to assign a default category to their post when the post is submitted.

Solution:
You can assign a default taxonomy to a post using the hook below.

function set_default_category($post_id) {
     
    if ( ! has_term('', 'genre')  && get_post_type($post_id) == 'post' ) {
   
        wp_set_object_terms( $post_id, 'funk', 'genre');
    }
}
add_action( 'save_post', 'set_default_category' );

Add the function to your Toolset custom codes in Toolset -> Settings -> Custom Code and activate it.

You will need to replace 'post' with the slug of your custom post type, 'funk' with the taxonomy term slug and 'genre' with the taxonomy slug.

Once you've done this then whenever your users create a post with no taxonomy assigned then one will automatically get assigned.

Problem:
The user was encountering Fatal errors after updating Toolset plugins.

Solution:
It appears that Toolset types is not compatible with Siteground's Ultrafast PHP option.
When I turned this off and used Standard PHP, the site has performed normally.

Problem:

I have an odd thing happening with one of my views that should get posts that are published between two publish dates. The dates are set by a shortcode attribute and a custom date field set by the current page (post). It works fine for any set of dates EXCEPT if the date range crosses over from one month to the next month.

Solution:

It is a limitation of WP_Query, when the report-start "day" value is larger than the report-end "day" value, it will conduct the problem you mentioned above.

In your case, I suggest you setup the View filter with wpv_filter_query filter hook, for example:

https://toolset.com/forums/topic/filter-view-between-post-dates-compared-with-shortcode-attributes/#post-2108303

Relevant Documentation:

https://toolset.com/documentation/programmer-reference/views-filters/#wpv_filter_query

https://developer.wordpress.org/reference/classes/wp_query/#date-parameters