tahts interesting,If only it was that smooth for meI had been trying the link on my desktop hence the broken link, it only works if you hit it from your phone. Worked out that I could get it from the app store after reading @andye's post but I can confirm if I hit the link from my phone it does take me to the same app (A1 Rewards).
App asks me for mobile number and password. All I have is an activation code from the SMS. I plug the activation code in as password and give my mobile number and I get "invalid username / password". The forgot password link does nothing.
im on android, and it worked from my laptop,
seems like we are all having problems at differnet stages
edit: if you click on the link from the phone directly, it skips the password bit, and then goes to enter your activation code,
but then I get asked to choose a password and then it dies!