I feel sorry for you regarding your expensive mistake. I also feel a bit aggrieved that so many of your peers are similarly affected too. It's down to the company, I believe, to do the right thing: remove these duds immediately from sale & offer unfortunate purchasers full refunds.
The company has clearly had sufficient time to increase the diameter of the windings within the motor to handle the doubled (low voltage) current, but have chosen not to. Likewise, consumers have had more than adequate time to either choose an alternative, more robust & reliable product or divest themselves of their erroneous purchase.
Those that continue to purchase this clearly inadequate low-voltage version of this palpably faulty product should however accept responsibility for their own mistake/s. Just as somebody who purchases property in a bushfire/flood/landslide/earthquake/cyclone prone environment, or seafront property at risk of erosion post 1970 (when the effects of global warming/CO2/Methane atmospheric increase became well publicised) must likewise shoulder responsibility for their poor decision making.
Given that the problem of the Kapex field coil windings' inability to handle normal household levels of 110v current has been well publicised for at least the past 3 years, and possibly much longer, it's perhaps a mite disingenuous to expect the company to warrant their faulty product beyond the statutory 3 year period.
The company is allowed, perhaps even justified, in selling dud merchandise, provided warranty protection extends to the publicised 3 year period. The Caveat Emptor clause nevertheless applies to those foolish enough to ignore the ample warnings published by others. If you knowingly purchase a lemon, then one shouldn't be surprised with the resultant mess that will all but inevitably ensue.