Totally useless. Bought a return ticket from Perth to Bali paying extra in case I needed to change my return date . Had to change the date as my visa was expiring. Try to change it in app , told me to change with airline. Airline told me to use eDreams. Tried to phone eDreams but could not contact as I was outside Australia. Try Whatsap, said same thing. Then Tried their messenger service and it kept telling me that because my flight was within 4 hours I must contact airline. I did this several times over two days always it told me the same thing ( unbelievable as my original return date was two weeks away. I even had a friend in Australia phone eDreams on a Adelaide number only to be told that I would have to contact them . Enough stress so I paid for a new ticket.