That video is very helpful. That is 100% how SK9822 LEDs behave when Game Frame is compiled for APA102. I’m certain you were sold SK9822. You’ll just need to use a newer version of FastLED. They actually added support after I sent them a panel I used to test compatibility when APA102 were out of stock, and I noticed the same thing you did.
Just use the latest master branch of FastLED. I’m not sure about your issues with the grid remaining dark. If that’s still an issue, it shouldn’t be based on the version of FastLED.