I just now discovered this message here. Sorry: I haven't figured out how everything on the site works. I'm still using the Hidrex machine with success. But I've had it stop working working twice. In one case, I had started an allergy medication that was a cortico-steroid. Once I discontinued the use, the machine started working again. More recently, it stopped altogether. My wife noticed that her tea was tasting terrible. It turns out that there had been a change in the water processing. I started buying bottled mineral water, and iontophoresis started working again. I'd definitely purchase the machine again. Let me know what works for you.