About the site in question - its a Russian-Ukrainian service. They use Yandex as their mail provider. Its one of hundreds of sites they created to spam Google. Their live Chat is shared between hundreds of website. Operator doesnt even know if you ask what service they represent. Clearly broken English. They post a coupon when you want to run their site. Its all fake soviet propaganda.
They brag about providing free cover page, outline, or references, but shouldn't it be free anyway? They only give you 275 words per page when legitimate services give you 300 or more. They don't list a phone number because its being used by hundreds of their other websites, so they only want you to chat with a broken English agent. They are not truthful about claims about writers (they are not professional, English-speakers, experienced, or reliable). If there's someone on the chat just ask where they are located. You'll hear lies about the UK or US, when in reality it's closer to Siberia.
You should choose your writer more carefully. All that i can advise you is to use the recommended services or freelance writers to do your papers / essays / dissertations. Last year I ordered an assignment from one of them, and they did great work! I don't want to share which exactly but it's on the more expensive side but still worth it. I didn't use the two cheaper ones yet.
So, good luck to you next time.