I can't help directly, but looking at the product page, there are about a dozen different ways alignment could get out of whack enough to cause noticeable error. I see lots of manual placements, lots of mdf, and lots of moveable parts, many of them made out of rather thin aluminum, and all marketed to beginners.
How much error are you getting? What's your experience level? Any prior hobbies (I ask only because machinists sometimes drive themselves nuts with the slop inherent to woodworking)? Is the error consistent or variable? Does it change based on type or size of stock? Do you have a basis for tool comparison, e.g. table saw, hand-marked track saw cuts, Festool MFT, etc.?
Also, try cross-posting to the !woodworking@lemmy.ca as I think it's just a touch more active.