Hi,

1) Enforce the misc__address_order parameter for both the calenar and the single event page via these two PHP hooks.

add_filter('stec_shortcode_atts', function ($atts) {
    $atts['misc__address_order'] = 'address,city,state,postal_code,country';
    return $atts;
});

add_filter('stec_single_shortcode_atts', function ($atts) {
    $atts['misc__address_order'] = 'address,city,state,postal_code,country';
    return $atts;
});

You will have to insert this hook in your child-theme functions.php file since I don't have access to do it myself.

---

2) If you want to convert the Address Element to a one line text you can do so with js like I did in your template (HeyGR Event Layout) here:

The JS code there is:

(function () {

    const addressContainer = document.querySelector('.stec-event-location-address.custom-address');

    const allLines = Array.from(addressContainer.querySelectorAll('stec-div stec-span:nth-child(2)'))
        .map(element => element.textContent.trim());

    let displayAddress = '';

    if (allLines.length === 5) {
        displayAddress = `${allLines[0]}, ${allLines[1]}, ${allLines[2]} ${allLines[3]}`;
    } else {
        displayAddress = allLines.join(', ');
    }

    addressContainer.innerHTML = `
        <span>${displayAddress}</span>
    `;

})();

If course you can modify it. This is just an example.

You forgot to place the custom class to the address element ( custom-address ).

The js expects the element to have this class name otherwise nothing will happen.