PageSpeed - Especificar caché de navegador

Hola a todos.

Sigo intentando pulir la puntuación de Pagespeed de Google y uno de los apartados que se me resiste es el de "Especificar caché de navegador".

He insertado el codigo que aconsejais en varios post en la parte inferior de mi .htaccess, pero no hay manera, sigue igual, he comprobado a fuerza de buscar que mucha gente en prestashop tiene el mismo problema, aunque se inserte el código en .htaccess Pagespeed sigue dando el mismo mensaje

Establecer una fecha de caducidad o una edad máxima en las cabeceras HTTP de los recursos estáticos indica al navegador que cargue los recursos descargados previamente del disco local en lugar de hacerlo a través de la red.

No hay ninguna manera de resolverlo?

Os adjunto mi .htaccess por si creeis necesario revisarlo, así como un enlace de mi tienda a pagespeed.
https://developers.google.com/speed/pagespeed/insights/?url=https%3A%2F%2Fwww.regalosdibenedetto.com%2F&tab=desktop

SetEnv HTTP_MOD_REWRITE On


# ~~start~~ Do not remove this comment, Prestashop will keep automatically the code outside this comment when .htaccess will be generated again
# .htaccess automaticaly generated by PrestaShop e-commerce open-source solution
#  http://www.prestashop.com  -  http://www.prestashop.com/forums 



SetEnv HTTP_MOD_REWRITE On


RewriteEngine on


#Domain: www.regalosdibenedetto.com
RewriteRule . - [E=REWRITEBASE:/]
RewriteRule ^api$ api/ [L]

RewriteRule ^api/(.*)$ %{ENV:REWRITEBASE}webservice/dispatcher.php?url=$1 [QSA,L]

# Images
RewriteRule ^([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ %{ENV:REWRITEBASE}img/p/$1/$1$2$3.jpg [L]
RewriteRule ^([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ %{ENV:REWRITEBASE}img/p/$1/$2/$1$2$3$4.jpg [L]
RewriteRule ^([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ %{ENV:REWRITEBASE}img/p/$1/$2/$3/$1$2$3$4$5.jpg [L]
RewriteRule ^([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ %{ENV:REWRITEBASE}img/p/$1/$2/$3/$4/$1$2$3$4$5$6.jpg [L]
RewriteRule ^([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ %{ENV:REWRITEBASE}img/p/$1/$2/$3/$4/$5/$1$2$3$4$5$6$7.jpg [L]
RewriteRule ^([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ %{ENV:REWRITEBASE}img/p/$1/$2/$3/$4/$5/$6/$1$2$3$4$5$6$7$8.jpg [L]
RewriteRule ^([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ %{ENV:REWRITEBASE}img/p/$1/$2/$3/$4/$5/$6/$7/$1$2$3$4$5$6$7$8$9.jpg [L]
RewriteRule ^([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ %{ENV:REWRITEBASE}img/p/$1/$2/$3/$4/$5/$6/$7/$8/$1$2$3$4$5$6$7$8$9$10.jpg [L]
RewriteRule ^c/([0-9]+)(-[.*_a-zA-Z0-9-]*)(-[0-9]+)?/.+.jpg$ %{ENV:REWRITEBASE}img/c/$1$2$3.jpg [L]
RewriteRule ^c/([a-zA-Z_-]+)(-[0-9]+)?/.+.jpg$ %{ENV:REWRITEBASE}img/c/$1$2.jpg [L]
# AlphaImageLoader for IE and fancybox
RewriteRule ^images_ie/?([^/]+).(jpe?g|png|gif)$ js/jquery/plugins/fancybox/images/$1.$2 [L]

# Dispatcher
RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^.*$ - [NC,L]
RewriteRule ^.*$ %{ENV:REWRITEBASE}index.php [NC,L]


AddType application/vnd.ms-fontobject .eot
AddType font/ttf .ttf
AddType font/otf .otf
AddType font/woff2 .woff2
AddType application/x-font-woff .woff

	
		Header set Access-Control-Allow-Origin "*"
	



	ExpiresActive On
	ExpiresByType image/gif "access plus 1 month"
	ExpiresByType image/jpeg "access plus 1 month"
	ExpiresByType image/png "access plus 1 month"
	ExpiresByType text/css "access plus 1 week"
	ExpiresByType text/javascript "access plus 1 week"
	ExpiresByType application/javascript "access plus 1 week"
	ExpiresByType application/x-javascript "access plus 1 week"
	ExpiresByType image/x-icon "access plus 1 year"
	ExpiresByType image/svg+xml "access plus 1 year"
	ExpiresByType image/vnd.microsoft.icon "access plus 1 year"
	ExpiresByType application/font-woff "access plus 1 year"
	ExpiresByType application/x-font-woff "access plus 1 year"
	ExpiresByType font/woff2 "access plus 1 year"
	ExpiresByType application/vnd.ms-fontobject "access plus 1 year"
	ExpiresByType font/opentype "access plus 1 year"
	ExpiresByType font/ttf "access plus 1 year"
	ExpiresByType font/otf "access plus 1 year"
	ExpiresByType application/x-font-ttf "access plus 1 year"
	ExpiresByType application/x-font-otf "access plus 1 year"



	Header unset Etag

FileETag none

	
		AddOutputFilterByType DEFLATE text/html text/css text/javascript application/javascript application/x-javascript font/ttf application/x-font-ttf font/otf application/x-font-otf font/opentype image/svg+xml
	


#If rewrite mod isn't enabled
ErrorDocument 404 /index.php?controller=404

# ~~end~~ Do not remove this comment, Prestashop will keep automatically the code outside this comment when .htaccess will be generated again

Un saludo y muchas gracias por adelantado.

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