Won't let me redeem extra

[M5]

I am trying to redeem my extra - amazon music, but then it signs into amazon and then says activation error.

[Cleoriff]

@M5 

You need an Amazon account to sign into first. If you have any problems then contact O2

Guide: Coronavirus Community Help and Support 

https://www.o2.co.uk/help/account-and-billing/extras#choose