When I put the top/airlock on the top of the bucket, nothing is happening in the air lock. also when i press down on parts of the cap the air lock fluctuates.
Nice video
Also, it may take a while before there are bubbles in the airlock. It took 2 1/2 days to get bubbles in the airlock when I re-started the stuck dark mead (WayneB's directions... halfway through day 3, the airlock started chugging). So, patience is needed, I think.