One star, as there is no option for no star. Please be aware of kiwi and STAY AWAY. They are CRIMINALS and I say this based on concrete evidence. I had bought a return flight through kiwi. The second part (inbound flight) was canceled by the airline. Kiwi offered no possibility for partial cancelation of the ticket, so I couldn't use the first part and board my outbound flight which wasn't canceled. Although the airline offered me free rebooking or refund in case the same type of ticket was bought on the airline's website, there was no such option with kiwi. Moreover, as the ticket was bought through kiwi, I couldn't handle any cancelation directly with the airline (as falsely stated on kiwi website), as the airline was referring me to the booking agency. After paying a considerable amount of money to kiwi for rebooking, as there wasn't other option, kiwi failed to check me in online. Despite my efforts to reach them they weren't able to explain me the reasons why their check in failed. They just informed me a couple of hours before the flight that I should check in directly with the airline at the airport and I will be refunded. I did so and submitted to them all receipts that I received at the airport (that mentioned explicitly my name, booking code, the reason for the payment, date, time, amount etc) but they refused to process the refund stating that these official documents are not valid. If kiwi staff declares as not valid and does not accept official receipts that are fully compliant with the relevant legal requirements of the local Revenue Authority they commit CRIMINAL OFFENSE.