1. Hi Ramakanth, it did not work for me. On entering the above code it says: –

    The serial number entered is invalid.
    Try again or visit the online shop.

    Kindly suggest.

    Thanks

  2. I try to extend my existing account with this code but got message about serial number is invalid. I think this code is expired already or for one activation only

  3. Same here.

    The serial number entered is invalid.
    Try again or visit the online shop.

    Thanks for any help.

  4. Just wondering if this promo is only valid “if” you have a “German” IP address ??? I’m from the US.

  5. I try too,
    sorry 🙁 Promo Code is not work
    ”The serial number entered is invalid.
    Try again or visit the online shop”

  6. @ all:

    I checked once again with a new account, it seems the code working for only new accounts.

    Also check whether you are leaving space before ‘q’ in the promo code.
    Checking promo

  8. hey, Ramakanth I checked with my old account and the serial code is working. I think many people have added space before q, so please update the post.

    krishna cyberghost account

  12. I see what the problem was. You put the : right next to the code, and I thought it was part of the code. When I left out the : it worked.

    Thanks

  14. Thanks Ramakanth.
    This worked really well.
    I now have 19 months left on my premium account..
    Great.