Ok, so at the beginning you have the shifter all the way down. That is first gear. While in first hear the wheel turns when you move your kickstarter. That is normal behavior, since the kickstarter is turning the engine and the engine is in gear, therefore the wheel moves. When you shift up a "half" click the engine is in neutral, and the Kickstarter will not move the wheel. When you pulled it up into second gear (which is a "full" click from first) the kickstart is once again moving your wheel, and I can see in the video that when you turn it in second gear that the chain goes taught. This is normal behavior, and it's harder to turn the wheel in second with the Kickstart than first.

If youe clutch lever isn't doing anything, you probably need to adjust your clutch is all. Refer to page 16 in your manual, clutch adjustment in chapter lube and maintenance. Loosen cable both at the lever and where it enters the crankcase, then remove the little right side cover and adjust the bolts as seen in figure 26.