Curious if anybody else has experienced this issue. On two UAX (Mesa op.) flights in the past two months, I've been unable to connect with my UA wifi subscription. I can login without issue, though it asks for a two-factor authentication code which I obviously can't receive via text while in the air. I am then directed to the UAL app and told to make sure it remembers my device (no button for this) and to use the code displayed in there. Once logged in, the section of the app where a code displays is simply blank. When connected to a cellular connection, I have zero issue getting the codes to appear.