Originally Posted by
AviationMoose
It could be this, but it could also be the app version you have. I have two phones, and have the app on both. One (the older phone which doesn't accept the latest versions) hasn't given me the choice to join any of these challenges in maybe 6 months, whereas they all appear fine on the newer one. So it's a bit of a guess, but it could be the reason why.
yeah, i did wonder if this was an issue.
my 2016 iPhone can't use the latest version of the Nectar app - and I haven't received the Fruit and Veg challenge.