Front wheel pull left or right.
If that happens, first test if the trolley does without the golf bag. It may be that the bag is a lot heavier on one side, so that more weight is put on that wheel and therefore turns more slowly due to more resistance.
If the trolley pulls without the bag, the front wheel will have to be reset. This can happen if you have collided with a wall or tree.
There is an Allen screw (red arrow) in the thickening of the shaft on both sides. Loosen both of these + the big screw (blue arrow). Do leave the screws on.
Now you can move the wheel back and forth. Reset the wheel, tighten the large screw and test whether it goes straight ahead. Finally tighten the large screw and both hexagon screws.
If that doesn't work, just send an email to info@golfTed.eu