Steering locked steering wheel locked

I would be very surprised if a moped scooter had a 'Steering WHEEL'. In my day, they were called 'handlebars', and your part that failed is called the 'steering lock'. It is a generic Chinese scooter, so support is limited. If it is a combined ignition and steering lock, try turning it a full rotation one way or the other. Steering locks are normally a standalone device that is not part of the ignition, but can use the same key.

https://www.google.com/search?q=icebear+pmz150-17+scooter+steering+lock+removal

..

https://www.youtube.com/watch?v=d9dEOtFgKDc
Method 1 Unlocking Your Steering Wheel

1. Insert the key into the ignition. ...
2. Turn the key gently. ...
3. Apply pressure to the steering wheel. ...
4. Do not shake or rock the wheel. ...
5. Pull the key out slightly before turning it. ...
6. Turn the wheel and the key at once to unlock it.

https://www.wikihow.com/Fix-a-Locked-Steering-Wheel

Cause!
One of the most common reasons why a steering wheel won't lock right is that the detent is broken or worn down. If you don't know what the word detent means, then don't worry. The detent is basically "the catch" part that makes sure that your steering wheel locks into place.
https://carroar.com/steering-wheel-wont-lock/

have you tried to turn the steering wheel and then turn the key? when the steering wheel is locked it will not let the key turn, try turning the steering wheel to the right and then turning the key. Sometimes when getting out of the car your leg turns the steering wheel and locks it.

APPLY BRAKE AND MAKE SURE STEERING WHEEL IS CENTERED. IF IT IS PARKED SO THERE IS PRESSURE ON THE FRONT WHEELS AND HOLDING THE STEERING WHEEL HARD RIGHT OR LEFT IT WILL MAKE THE KEY VERY HARD TO TURN.

could be 2 things bad smart key and probably shift cable disconnected under steering wheel

if the steering wheel is turn all the way one way and locked by the steering wheel lock then you will have to turn the steering wheel more and try turning the key.sometimes when the steering wheel is turned all the way one way and locked the pressure that is against the lock will sometimes not allow the key to turn.if the wheel is in the straight ahead position it may be the ignition key lock is worn and needs replacing.

your steering wheel lock is connected to ignition in column, pull hard on steering wheel in direction wheels are turned at the same time turn key, this should free them both up.

Try turning the steering wheel (hard) right and left while turning the key. Steering lock , and ignition lock work in conjunction with each other.

When they did the alignment it's possible that they used a tool that locks the steering wheel straight while it's on the alignment rack.If they put too much pressure on the wheel when they used the steering wheel seat lock tool it may have stressed you tilt lock mech causing it not to lock where you want it.Hope this helps

Although the car is not in front of me, it sounds like when you park ( is this parallel parking ? ) your steering wheel is turned hard to the left or right, which creates extreme pressure on the steering wheel lock. In order to help overcome this problem, you must "armstrong" the steering wheel in the same direction the front wheels are turned. Locking up on the freeway with this same issue. Highly unlikely.