I am trying to book return flights from London Heathrow to Ercan (Cyprus) via Istanbul for outbound on 10th June 2022 at 22.10 and return 25th June 2022 at 11.35, however when selecting seats it will not allow me to keep the seats selected. Once selected there is no option to confirm my selection and the seats are not showing as selected when i come out of the page. Can you help to resolve this problem ??