Yes, I already relinquished the "it's possibly an engineering problem". And not sure why you need to explain it "stupidly simply" for me when clearly this is what should've been said originally to OP. It's unfortunate I had to aggravate you to correct both of our mistakes. In regards to the products you posted, I'd steer clear of the Comfast, it doesn't work. I've bought it and tried it, complete garbage. I can't say about the other ones, though.