display image of clonable group uploaded from the frontend

hi,
i've got a problem displaying images uploadet from the frontend to a clonable group. if i use the "single image" field and choose the images from the media library from the backend i can use...

function subfield_preset () {
    
    $reps = rwmb_meta( 'tage' );
    asort ( $rep['repeater_datum'] ); 
    if ( ! empty( $reps ) ) {
        foreach ( $reps as $rep ) {
            if ($rep['repeater_datum'] <= date("Y-m-d")){
        
                $image=wp_get_attachment_image($rep['repeater_bild'],array('700','700'));
                if ( ! empty( $image ) ) {
                    echo '<img width="700" height="700" src='.$image.'<br>';
                }

            }   
            else{
                
                //do nothing
                
            }
        }
    }
}

to display the image on the frontend.

but how do i display the image if it is uploaded through the frontend? i feel like i tried everything.