IvyBess Portable Steam Sauna (Open Box)

This worked great for one year and 3 months; had I written this review during that time period I would have given this 5 stars. But it stopped working - 3 months after the warranty expired. Gotta give two thumbs up to their Planned Obsolescence Department. The problem is that it works for a few minutes, then shuts off for about 30 seconds, then comes back on, then shuts down again... and on and on and on. And the problem with that is that during the 30 seconds all of the steam "leaves the building", so whatever sweat you had going just stops. And the cycle is such that you can't get a good sweat going (like I could during the first year and 3 months). Their user guide says that this could happen, and to boil with water and vinegar to remove any built up limescale. It says you need to do this just once. Once didn't work for me, so I did it again. And it still shuts off every few minutes.