Don't even bother

If you will have any problem, you will be ignored. I was confused about one question on the test and asked them three times to help. No response. The only thing they care about is money. Just send us the tests done, we'll send your certificate and go away dude.
If you don't like being ignored, choose someone else. The market is huge and these guys surely are the worst. I will be surprised if my notarized copy that I paid 199$ for, will even arrive.
I can only hope for it now.
Not even talking about how the webiste looks like it comes from 1996 and the tests are just odt documents.