As suggested below, more oil. Then wait (as you did) for testers to pop. Hold off on the sugar until it all starts to pop, if you add it too soon you are cooling the oil down, resulting in uneven poping which is why you have so many unpopped kernels, it's also why the kernels are sticking to the sides and the stir stick. Also the sugar can caramelize. Hope that helps. Good luck.

Where your safety glasses???😂😂😂 Glad to see you finally started. Wish u much success!!!

Yeah let the kettle get extra hot let it heat up longer lil more oil

add more oil, more kernels (to top of your cup and same with sugar(too the top of the cup).

Are you still cooking kettle corn even though covd?

What is the name of the popcorn machine u have?

need oil!!!