Hotlink Protection Not Working? What can I do more?

Hi,

I activated Hotlink protection but it only works on localhost. Our domain is dyler.com. For example where are our pics: http://automoriz.pue-mx.com/lancia-delta-integrale-evo-1-for-sale/

Maybe, someone has any idea how to protect our website?

Thanks in advance

example of the pic -
the pic -

Seems to work for me

image

aaaaa

Possibly your browser cache.