Hello @Akhil.K ,

welcome to our o2 community 
I have looked at your data. The SIM card should work. 
You also have enough credit on the card. 
Have you already checked in our LiveCheck. ?

Ist there a problem ?  
Or is it already working again ? 
Kind Regard, 

Solveig 

Thank you for your response. It is now working. 

@Akhil.K thank you very much for your short feedback here in the community. I am glad that everything is working again for you.
Do you know what exactly the problem was?

Best regards

Steffen