Alan is right, .0043mm is a mile. If nothing can move to make the mate work, you will have to provide some room or remove some mates. The trick to mating is using a few as possible. I don't want to download a 16MB file so I'll make some guesses, too many mates is my first. You might be better off to delete them all and start again.
Since your mate is prevented from working by such a small amount I would use just the concentric mate for the screw, and holes in the table top and the tubing. At most I would add a parallel mate to make the tabletop level and another parallel mate to the front face of the tabletop and the tubing. That would keep the tabletop level and square with the tubing structure.
Once that is done you can look for interference issues that you can accomodate. Use the Tools/Interference Detection options to find out where things need more room. It looks like there's no clearance for the wood tabletop and the tubing cutout to make assembly easy for the average person. Remember the wood will expand and contract with humidity and temperature. The aluminum tubing, not so much.
Thanks alot for your advices.. I started to think outside the box.... and came up with a new way to mate it
The holes isn't exactly next to each other.. but it doesn't matter as long as the the platform is fully defined
And thanks alot for the advice on how to extend the number of decimal Will help me out with alot of other things probably