When brand new, Apollo scooters can be occasionally difficult to fold. The folding mechanism will "break-in" over time and folding will become easier. A practice we always recommend to help with folding is applying pressure to the handlebar in the opposite direction from folding. Push the stem of the scooter away from the base, while pushing/pulling the folding latch. This counterintuitive approach will help with folding.
Here is a video demonstration of this to help visualize the movement:
When unfolding, do the same - push the stem away from the base of the scooter. It helps lock the folding bold in the socket, ensuring the scooter is securely unfolded prior to riding it.
For any additional questions, submit a request.