hinder, disturb, obstruct
罣 centers on creating an obstacle or interference: hindering, disturbing, or obstructing progress or action.
罣 combines 罒 (net) with 圭, which likely contributes the sound. The net suggests something that catches or entangles, fitting the idea of hindering or obstructing.
A net (罒) over a pair of jade tablets (圭) hinders their movement, like an obstacle that disturbs and obstructs.
For カイ, imagine a kite (カイト) tangled in the net, hindering its flight: kite -> カイ, and the net obstructs it.