Review on Grote 77102 Mighty Strobe Single by Mike Sutherland

So I installed the yellow block. It worked then, but the flash had a very unstable pattern. I just discovered that it was newer than the previous models that were used. Obviously not. Now it doesn't work anymore. I checked to inquire about the return and it passed the return date advertised by the seller. Awesome, now I'm stuck with a $60 piece of shit. I have beacons on devices that have been blinking for over 10 years. Not impressed at all with this device. I know it's just a bunch of good lemons, but it still annoys me that there's only 2 months to return a completely broken unit. Or is it refundable but I have to agree to lose money and pay for all shipping.