Last year, I bought one of those Instant Pot pressure cookers. I used it 3 times, and the fourth time I tried to cook rice in it, its timer wouldn't not go beyond 8 minutes, while the brown rice I had requires at least 20 minutes of cooking.
So I contacted the manufacturer, Instant Brands, which by the way operates in the US as well as in Canada. I explained the problem as the product was still under the one year warranty period. I was asked to do some testing that included taking photos of it while boiling water, and a also a video. Of course, I did find their request rather awkward and I told them that I didn't have the proper equipment to do that. I had no reply from them, so I trashed it in a recycling place. It's again Chinese built junk! I also gave away the recipe books that I had to a donation organization. I don't recommend anyone to purchase their products.