Rns d in early D2

[Carladams]

So coming to the last of my mods over lockdown , big thanks on the advice re retro fit solar roof which is great but heavy !
Next is to instal The Nav plus , I was lucky enough to acquire an early pre facelift centre console so just trial fitted the unit today as I had it on the shelf for years ( thanks A8 parts ) so all came on entered the code and got this
Any ideas , I know the code is correct as it is written on the unit as it was supplied
Thanks in advance