Comment privacy checkbox is not coming under comment section

Dear Team,
Basis current GDPR guidelines, comment privacy checkbox is not coming under comment section of my blogs - www.mommyinme.com and www.familyonthewheels.com .

It seems that the theme is overriding default WordPress comment form and hence that checkbox is not appearing. Pls suggest I need to implement that

Hello,

Sydney theme does display comment privacy checkbox. Please make sure that you are not logged in to see it.

However, the checkbox styling can be improved with the following CSS code. You can add CSS code in Customize → Additional CSS section.

.comment-form-cookies-consent {
    display: flex;
}

.comment-form input#wp-comment-cookies-consent {
    width: auto;
    margin-right: 5px;
    margin-top: 0;
}

.comment-form-cookies-consent label {
    margin-bottom: 0;
    line-height: 1.1;
}

Please feel free to ask any other questions that you might have.

Kind Regards, Roman.