VERY good point about the couplings. Mine failed because instead of having only one coupling (and 4 bars across making and X). Mine had.....something like 8 bars, with couplings at every 2 feet of bar. That's what eventually cracked. Many others I see have that too, but their's seem to hold up better. I know EZ-up's don't have all those "quartered" couplings.
That probably makes no sense. So here's a
photo. Where the bar is broken...EZ-up is a solid bar. All those couplings you see, just means each is an individual piece. I thought it was a solid piece, it's not and that's where mine broke, in a few places.
So check to see the strength of that coupling. BTW, that canopy is a QuikShade. Can't say if it was faulty or if it's the brand that is bad.