Did not work for me - Primary Arms SLx 3x21mm Micro Magnifier Red Dot Sight

I purchased this magnifier to pair as a flip to the side option with a primary arms micro prism slx 1x. I have astigmatism and based on reviews I thought that the combination would work better than a red dot combo I used previously. The scope was amazing unfortunately, I was not able to get the magnifier to focus on the reticle of the scope at all following the manufacturer instructions and watching their videos on YouTube as well as others. I thought it was my astigmatism but then my sons couldn’t get it to either and they have 20/20 vision. Probably just a one off defective unit. I ended up returning it. Optics planet was great with their customer service and that was good. I have two other primary arms scopes and I wanted to love it but it didn’t work for me. I think the concept of 1x scope especially the amazing primary arms reticule and magnifier combo is good depending on the planned application but eye sight dependent.