I recently became a mileage member and cannot register my mileage number on My Trip+.
Some airlines may take certain amount of days to get customers' information registered into their system. If you have plenty of time until departure date, please wait for about a week from the time that you became a mileage member and try again. In case you do not have enough time, please contact your travel agency.
I have booked several flights on different airlines, and I would like to register my mileage numbers for each airline...
Unfortunately My Trip+ does not support registering of multiple airlines' mileage numbers. Please contact your travel agency. We apologize for the inconvenience.