when asked to put in a 24 didgit serieal number my serial numbeer has letters and it won`t allow me to type in when i put in the letter,what am I doing wrong?

[alexp65665834]

when asked to put in a 24 didgit serieal number my serial numbeer has  letters and it won`t allow me to type in when i put in the letter,what am I doing wrong?

[Ned Murphy]

If it has letters it is not a serial number.  It is likely a redemption code.

Redemption Code Help

http://helpx.adobe.com/x-productkb/global/redemption-code-help.html