dothop.com review: I had problems with their app 1

I found the website www.dothop.com and I decided to download the app from them. I installed it and thought that it was easy to use, but I had mistaken. This app was slow and showed that some error occurred. I tried to solve this problem, but nothing changed. I tried to find contact info of support team, but also I didn’t find it. I wonder if there are people with the similar problem, please post comments and share your views about it.