Just generating a code from that link and showing it works with CISF?

I haven't had this issue on recent flights, but I have an Expedia UK booked TG flight (because it wouldn't book into the correct fare code on TG's website). I'm not sure if I'm ever going to get a 2D barcode here and the TG website is a real challenge to manage my booking from.

Side note, TG flights still load up very well on the SAS app (SAS used to be a part owner of TG at one time), and it is much easier to change seats/manage booking there rather than on TG's own abysmal manage booking process.