We had ours delivered on Tuesday, had to sign for it, basically if you are a married couple on a joint membership of SGK and your spouse is in receipt of pension income they can no longer be covered on your SGK. ( We asked our friend to read it for us to make sure and that is the gist of it). BUT on the other hand they, SGK, are also saying that no one who receives a pension is entitled to be in the SGK scheme, so make of it what you will.
We are awaiting the outcome of the Consulate meetings due to be held next week before we do anything and are not paying any more SGK premiums until it's sorted.