@michaelhow57243 we have the same issue. Card reader never been used since it was bought in 2017 other than a quick test transaction.
Do you have the details of what you put in your claim as I want to go down the same route? Or at least the gist of it?
This isn't about the money it is making sure they start to take some notice and produce a product that doesn't block when it shouldn't or at least replace for free in circumstances like this.