Has anyone used Flughts for international flights lately?

I am wanting to book an international round trip soon and checked out Flughts. I thought the site looked good, but I am interested in how it handles international reservations. What is the fare accuracy? How is the payment? Do you have issues with hidden fees? What about on the confirmation? If you have used Flughts to travel abroad, I’d love to hear about your experience before I book my ticket.