tag archive has no read more label

It is actually not a custom post type, it is the default renamed Post Post-Type. I did

function plgd_adjustPostLabel()
{
    global $menu;
    global $submenu;
    $menu[5][0] = 'Products';
    $submenu['edit.php'][5][0] = esc_html__('All Products', 'plgd');
    $submenu['edit.php'][10][0] = esc_html__('Create Product', 'plgd');
    $submenu['edit.php'][16][0] = esc_html__('Tags', 'plgd');
}
function plgd_adjustPostObject()
{
    global $wp_post_types;
    $wp_post_types['post']->menu_icon = 'dashicons-store';
    $labels = &$wp_post_types['post']->labels;
    $labels->name = esc_html__('Products', 'plgd');
    $labels->singular_name = esc_html__('Product', 'plgd');
    $labels->add_new = esc_html__('Add New', 'plgd');
    $labels->add_new_item = esc_html__('Add New Product', 'plgd');
    $labels->edit_item = esc_html__('Edit Product', 'plgd');
    $labels->new_item = esc_html__('New Product', 'plgd');
    $labels->view_item = esc_html__('View Product', 'plgd');
    $labels->view_items = esc_html__('View Products', 'plgd');
    $labels->search_items = esc_html__('Search Products', 'plgd');
    $labels->not_found = esc_html__('No products found.', 'plgd');
    $labels->not_found_in_trash = esc_html__('No products found in Trash.', 'plgd');
    $labels->all_items = esc_html__('All Products', 'plgd');
    $labels->archives = esc_html__('Product Archive', 'plgd');
    $labels->attributes = esc_html__('Product Attributes', 'plgd');
    $labels->insert_into_item = esc_html__('Insert into product', 'plgd');
    $labels->uploaded_to_this_item = esc_html__('Uploaded to this product', 'plgd');
    $labels->featured_image = esc_html__('Product image', 'plgd');
    $labels->set_featured_image = esc_html__('Set product image', 'plgd');
    $labels->remove_featured_image = esc_html__('Remove product image', 'plgd');
    $labels->use_featured_image = esc_html__('Use as product image', 'plgd');
    $labels->filter_items_list = esc_html__('Filter products list', 'plgd');
    $labels->items_list_navigation = esc_html__('Products list navigation', 'plgd');
    $labels->items_list = esc_html__('Products list', 'plgd');
    $labels->item_published = esc_html__('Product published.', 'plgd');
    $labels->item_published_privately = esc_html__('Product published privately.', 'plgd');
    $labels->item_reverted_to_draft = esc_html__('Product reverted to draft.', 'plgd');
    $labels->item_scheduled = esc_html__('Product scheduled.', 'plgd');
    $labels->item_updated = esc_html__('Product updated.', 'plgd');
    $labels->item_link = esc_html__('Product Link', 'plgd');
    $labels->item_link_description =esc_html('A link to a Product.', 'plgd');
    $labels->menu_name = esc_html__('Products', 'plgd');
    $labels->name_admin_bar = esc_html__('Procduct', 'plgd');

}

add_action('admin_menu', 'plgd_adjustPostLabel');
add_action('init', 'plgd_adjustPostObject');

removing the add_action calls did not help.

Excerpt is enabled and works with the core query block

Hmmm... odd one. If i switch from Excerpt to Content then it works correctly.
What happens if you add a manual excerpt to one of the posts ?

i did add an excerpt to https://plgd-trading.com/product/super-gran-reserva/ which is fully displayed no matter the word count value, but there is still no read more link.

OK so that part of the excerpt functions are still working ( manual excerpts don't automatically display Read More ) which i kinda expected it not to... still a head scratcher as to why no auto excerpt is displayed.

Before we start looking at other options - can you confirm there is not a Plugin conflict by temporarily disabling all plugins apart from GPP and GB

I just rechecked. I disabled all plugin apart from GPP GB and GBP, and switched to the parent GP theme. Still no auto excerpt and read more...

I will keep it in this state for now, so we can make absolutely sure it's not some custom code or plugin.

Can you try creating a new 'product' post and just add plain text - no container blocks or other block content. As it may be related to how WP deals with nested block content in the excerpt

See: https://plgd-trading.com/product/tag/86-arabica/

As it may be related to how WP deals with nested block content in the excerpt

Seems correct. The Button is now available. Where do we go from here?

Which version of WP are you running ?

5.9.1

Hmmm... i thought they had patched that... seems it won't work with content inside containers 2 levels deep.
What happens if you add this PHP Snippet:

add_filter( 'wp_trim_excerpt', 'tu_excerpt_metabox_more' );
function tu_excerpt_metabox_more( $excerpt ) {
    $output = $excerpt;

    if ( !has_excerpt() && '' === $output ) {
        $output = sprintf( '%1$s <p class="read-more-button-container"><a class="button" href="%2$s">%3$s</a></p>',
            $excerpt,
            get_permalink(),
            __( 'Read more', 'generatepress' )
        );
    }
	
    return $output;
}

This should output the button if there is no excerpt.

The alternative to this is to create your own Content Template:

https://docs.generatepress.com/article/block-element-content-template/

What happens if you add this PHP Snippet:

See https://plgd-trading.com/product/tag/86-arabica/

1: Post without Block Content, no manual excerpt; 2 Buttons
2: Post with Block-Content, manual excerpt; 0 Buttons
3: Post with Block Content, no manual excerpt: 1 Button

Made a change to the snippet above so it also checks if the auto excerpt if empty.

And to note - this line:

__( 'Read more', 'generatepress' )

Is where you can change the label.

https://docs.generatepress.com/article/block-element-content-template/

I like that. But since we've come so far, is there any chance to get rid of the 3 dots from the excerpt?

Simplest method is a little CSS:

.entry-summary p:not(.read-more-container) {
    display: none;
}