O2 Open discount error

[bw3]

i am trying to add O2 open discount but its coming up with error message. any ideas how to resolve this? 

B

[Bambino]

@bw3 We can't help with account issues:

How to find help & contact O2: A Guide - O2 Community

[madasaf1sh · Accepted solution]

@bw3 

When did you start your contract or upgrade, is it in the last 28days

As I usually leave it 3 or 4 days after upgrading to apply the Open Discount.. 

All the details on open are here Guide: O2 Open & Friends and Family discounts - How to sign up