Phoning used to be my standard mode of getting it sorted, and still is an option.

I have earn from one leg of a recent journey still not credited. Went to claim page and it immediately stated claim unsuccessful due to 'Data not in data store' - just complete nonsense. This was for completely normal, earned flights. That said, I did upgrade on that leg, and noticed after the upgrade went through, that the potential flight earnings display disappeared from the app, so probably some stuff-up in their system. I'll be calling next. The claims page said due to a backlog it could take 5 weeks to resolve any claims at present - as if!