Moin Moin,

have you try to send the activation sms?

I am not sure what text to send and to which number.

Ok your “first time” to extend.

This problem some times happen.

Try:

O2 Service in English 

Our English-speaking postpaid and landline support for you. We are happy to assist you.

089 66 66 30 08 1

Mon. - Fri. 8 am - 8 pm, Sat. 10 am - 6 pm, on workdays

 

Got it thanks. Is there no other way than to call?

Wait for a O2 Mod., o2 Kontaktformular or https://web.whatsapp.com/send?phone=4917688844444

Hello @abhi99,
the SMS notification should be sent automatically. You can then reply with ‘weiter’ and the additional 2GB will be activated. Have you received the message in the meantime?
Kind regards, Bianca

Hello @abhi99 
Even though some time has passed here, I wanted to ask you - did everything work out for you with the SMS booking of the additional data volume?
Best regards, Kathi