I’m a Revolut Ambassador and normally when sharing my invitation to my friends they did not have to pay for the card fee.
But now it happened to a friend.
Can anyone explain if anything changed?
AFAIK nothing has changed. Probably there was a problem with communication between website and Google play. (I suppose that it was on Android because I’ve never heard about this problem on IOS)
Tell them to contact support and I think they will refund them