You do not have enough credit to activate the option.
You have to top up credit and then the option will be activated and you can use it.

My bank is not part of IBAN and the other methods of adding credit take too long. It would be much more convenient if O2 accepted credit card payment on their website.

You can top up your prepaid balance with your credit card. For this you have to use the express top-up

(Express-Aufladung)

Enter Mein o2: https://www.o2online.de/ecare-prepaid/aufladen-uebersicht

Scroll down and look for Express-Aufladung

You will redirected to following page

Hi @tearsbeforecrying ,

thanks a lot for the guide! @mzhaaao Have you managed to use your credit card (or PayPal) to top-up your credits?

Best regards,
Kurt

I already purchased express top up prepaid for my prepaid sim card  and it is in my balance fir my data m 14,99 euros

but i cant use it yet 

does it need activation and how? 
 

 Hot line only in german 

and i have no balance to call English hotline 

Hi @May zam, welcome to our community 
Have you already activated your sim card? Booking an option is only possible for registrated cards.

kindly regards
Michael

Nicht bemerkt, dass der TE das Anliegen über mehrere Threads verteilt hat?

Hello @May zam,

please stay in one thread with your concern. I’ll answer you here. Will also write a comment in the other thread (this one) that the conversation will continue here.
As I see you have a prepaid sim card from o2. If you want to activate it please have a look at our English FAQ: Click. There you’ll also find a link where you can activate your sim card.

If somethind does not work do not hesitate to contact us here again.

Kind regards
Jessica