Update for anyone else coming through Google, I just got my code for £5 (6 USD according to Google) from a UK company, they don't seem to have a Porsche page yet but I used their Becker page here
https://www.rapidradiocodes.co.uk/manufacturers/becker. Code was shown on screen and sent to my email as soon as I paid, costs practically nothing and beats waiting around posting to forums, hope this can help others coming across in the future