I just received my Mondo card. I clicked on the option in the iOS app to say my card had been delivered.
Just after it said “£100 has been added to your card” the app crashed (went away).
Restarting the app caused it to continue at this point & progress through to the text message etc
I do have the diagnostic log I can share if it’s useful (I didn’t have logs set to auto send in iOS). The crash appears to be during SSL handshake.
Note I am using iOS 9.3.2 beta 2.