i wanted to buy the mobile booster but i can't see the field where i have to type in the code to accept the payment.. l:

- xbaN

You have to text them back with the code you received on your phone, that'll add the funds to your onebip account (unless they have different process of that for different countries, but I doubt that).

Hmm so I get the code on my mobile phone, but the problem is I can not enter the code on the Onebip page, everything is shown to me is a blank white window with "Current Payment" as a heading

Read my message properly, please.
There's no place to enter that code on the onebip website, you have to send it back to that phone number you got it from.

well when i bought my mobile booster i entered my password on the onebip website
they sent me a 4 letter code i typed it in, then they gave me options yes or no and then i said yes and payment was complete

I dont know why this isnt working for me :S
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~ Sir
I am sry, i will try it..
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Soo guys, i thank u for ur help i tried it more times but it still won't work, i decied to contact the support, i hope they can help me.