Been giving this website a good old test mine and by the looks of it they only have us servers and no eu ones yet.
I think you have that reversed... They only have a French/EU server with no US servers. Been begging them for a US node for months.
Yeah sorry that was my bad.
But what I have noticed is it does not show the correct Kh/s or anything close to the correct amount.
Mining with a 7970 getting 500 - 600 Kh/s site reporting it close to 200 - 300 Kh/s
The hash rate on the site is based on shares not your worker's hash rate. I have about 900 Kh/s but the site display fluctuates between about 600 and 1200 so it kind of evens out I guess.
Good just need to save up for some more gcards and mine some more it is a really nice website.