Sprytechies

Presently the images are shown of actual width of image so they are differ.For these you have to fixed the image width to 100% or fixed the div width.
.thumb-wrapper img{width:100%;}

check the file where you changes, check for syntax like missing braces or spelling mistake.

first registered custom menu if you developed in functions.php
for example:-
//register the custom menus

function register_my_menus() {
register_nav_menus(
array(
'profile-menu' => __( 'Profile Menu' )
'services-menu' => __( 'Services Menu' )
)
);
}
add_action( 'init', 'register_my_menus' );

then on specific or desired page user this code for example:-

<?php
if (is_page('profile')){
wp_nav_menu(array('menu'=>'profile-menu' ));
} elseif (is_page('services')) {
wp_nav_menu(array('menu'=>'services-menu' ));
}

?>

try widget options in admin panel

may be because of syntax error while changes.

for extracting the current user id user get_current_user_id() function.

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