Why can't I see my data usage on my o2 app

[Naimsaby]

I transferred my number from giffgaf to o2 and can't see my data usage it say not available at this time please help

[Naimsaby]

I transferred my number from giffgaf to o2 and can't see my data usage it say not available at this time please help

[jonsie]

Try again in the morning @Naimsaby 

The systems go offline around this time every day to update

If you still have a problem

You'll need to call them.
All Numbers are here

Guide: Coronavirus Community Help and Support 
Or advice from an O2 Guru regarding a way to get through:
If you call 202 when it comes to the reason you are calling stay silent for 15 seconds and you will be taken to the keypad options.
Press 2 for Everything Else
Press 5 for More Options
Press 7 for Anything Else which will put you though to someone.

Choose upgrades or even fraud options