Impossible to check in using conventional methods - that's the biggest load of BS I've read all day.
Two things:
- You're SG, and have access to the Premium Desk to check in.
- Your old QFF card, mobile or online boarding pass can be used at the self check-in units to check in & print bag tags for use at the self-serve injectors.
You're moaning because you can't use some fancy features, when everything still works even without some fancy card & hockey pucks (which maybe save a minute or two if lucky for someone who supposidly travels as frequently).
A true DYKWIA if there ever was.