I will never ever again reserve any flight or anything else on kiwi.com. and I strongly recommend everybody to do the same!! Very recently, I reserved a flight and paid more than USD 1,640 for it on their site. of this price, the basic flight price ticket was 1,200 and USD 404 was for an extra standard ticket fare. As per the ticket conditions, I had the right to change the flight 4 hours or more prior to the departure, at only a price difference cost (if any, meaning by applying a full deduction of the original price price I paid from the new ticket price). Because of the new Covid restrictions at the destination country, I had to change the flight for ulterior date. I tried to make the change online, but the process failed due to a bug in their website. I called kiwi's call center, well before the 4 hours deadline. The person I had on the line confirmed that I have enough time to change the flight, I provided her the details for the new flight. She said that I will receive a confirmation e-mail. When I got the e-mail one hour later, I was shocked to see that they require me to pay the full price for the new ticket. I called them again 3 times and sent them e-mails. But the only response I received from them was that their process team decided that I have pay the full price for the new ticket, with no further explanation. also I paid in advance USD 404 for the rebooking option. I decided that I don't want to lose my USD 1,640 (which is a huge amount for me), and I will not let them cheating me. I have already notified my credit card company about the problems I have with this dishonest company, and Im planning also to file complaint at the European Consumer Center in the coming days. In order to do that I need to show that I did efforts to contact the company first. This is an extremely unpleasant situation for me. I'm sharing my bad experience with Kiwi, in order to warn other people to avoid having similar situation.