If you purchased the online check-in service of lol-travel you will receive an email 3 days before your departure and you will be asked to provide us with your details in order to be able to make your check-in.
At that point, you just have to answer our email providing the required data and, as soon as the company opens the online check-in, we will send you the boarding pass that you can print or save on your phone and present them at the airport.
Please note that if we do not receive all the requested information, we will not be able to proceed. The service provides check in for all flights and for all passengers in booking and you can buy it only during booking.