https://community.servicetitan.com/t5/General-Office/Check-in-Policy-When-can-I-check-in-online-with-Eurowings/m-p/54476#M2521
https://community.servicetitan.com/t5/General-Office/Check-in-Policy-When-can-I-check-in-online-with-Eurowings/m-p/54476#M2521