I’ve just spoken to someone in Lidl Customer service, I rang them on the number posted above. I asked them why the rolls aren’t on the shelves, and was told it’s a manufacturing issue. They say they are extremely popular and they have been getting LOADS of calls about them from disappointed customers. They said that they hope the disappearance of the rolls is temporary, it hasn’t been their decision to stop selling them, rather that it was out of their control as the manufacturers stopped supplying them. They are hoping to get a replacement but couldn’t give a timescale for this.
Honestly, the more phone calls they get about this, the better, it might make them speed things up although I think they are realising just how popular they are with diabetics because nowhere else sells anything quite like them.