First things to improve:
The bike is heavy, and the brake discs are only 160mm of low quality, especially since you can't use engine braking. You need to replace them with 180mm of better quality.
Replace the handlebar stem with an adjustable one.
The front chain sprocket is too small.
The "Walk Assist" mode should be from the lever, not the button.
A battery for max 80km (definitely not for 129km, unless you're a child athlete).
I added indicators.
The rear shock absorber is very solid with little movement (a larger one would cause the wheel to rub against the controller).
With the handlebars turned, you can catch your fingers on the front mudguard while pedaling.
And now some positive features.
The power is satisfactory. With two engines on, the bike will pull a heavy person up the biggest climbs.
The frame looks strong. The set includes service keys, a phone holder with a USB charger.
The gears work very well after adjustment.
The lighting is good.
Overall, the bike is pleasant to ride.
I only regret that it is not a 5000W version because I miss this power, and even that was my minimum expectation. But this is not the manufacturer's fault, but the EU directives