Edit the T&C text and link of a Direct Stripe button

ds-edit-tc-link.php

<?php
/*
 * Use this filter to edit the T&C text and link of a Direct Stripe button
 */
add_filter( 'direct_stripe_tc_conditions', function( $tc_cond, $button_id, $instance, $tc_text, $tc_link, $tc_link_text){
    
    if( $button_id !== 'MyButtonID') { //EDIT MyButtonID to be the Button CSS ID set in the button settings
        return $tc_cond;
    }
    $tc_cond = '<br/><input type="checkbox" class="ds-conditions" id="ds-conditions-' . $instance . '" required/>
        <label for="conditions">
        ' . __('By following you accept our', 'theme-or-plugin-slug') . '
            <a target="_blank" href="' . esc_url($tc_link) . '">' . $tc_link_text . '</a>
        ' . __('and our', 'theme-or-plugin-slug') . '
        <a target="_blank" href="https://domain.ext/privacy-policy">' . __('Privacy policies', 'theme-or-plugin-slug') . '</a>
        </label><br />';

    return $tc_cond;
}, 10, 6 );

Rewrite the condition for multiple buttons :

if ( ! in_array( $button_id, array( 'firstButtonID', 'secondButtonID', 'thirdButtonID' ) ) )