I'm a licensed plumber, and I e watched the quality of these products plummet over the last few years. Their customer service number is useless.
You MIGHT talk to someone within an hour. Or you might hold for an hour and be disconnected. The ONLY option at that point is to call back and wait another hour. It's like they just want you to go away.
So I am. I will NEVER recommend their products to anyone, ever again.