Full scrap - 3 months in service without feedback

For a year now I have the keypad, first it was just fine, suddenly stopped.
Three months (!!!) it was under repair then I got a new Apple gates where I had bought it.
In "goodwill" as it says on the note. The new is not well.
As the reseller in Potsdam assumes that it is a software problem to update the Mac,
he is not willing to take it back or continue to take care of support,
for it is not from Apple ... shame as it was still running it was really a useful tool.
Warning: brand new last connected and is shown as connected,
but assumes no entries. Wasted time and money!
No rating - even if I wanted to.