Hello Roy,
thanks for the pictures and the video.
That looks pretty good - the fast and then slow blinking blue LED means that the magnetic zero orientation of the rotor was determined and that the motor is ready to be used.
This alignment procedure is required at every startup.
From what you’re describing the most likely problem is that the motor phases might be connected in the “wrong” order.
When we test an actuator module for the first time we just guess the motor phase order and test the module in spring mode - if the module doesn’t respond as expected and feels jerky when you move it by hand the motor phase order is reverted.
In that case you want to power down the motor driver board.
Invert the motor phase order by simply swapping two of the motor phases.
It doesn’t matter which ones - for example A and B.
Restart the motor controller, realign the rotor and test the spring mode again.
I hope that helps - please let us know if this solved your problem.
Best, Felix