What is the firmware version on the zigbee part of the stick?
This one? https://zigbeealliance.org/zigbee_products/innr-zigbee-3-0-a19-bulb-rgbw/
See HUSBZB-1 (Combo Zigbee and ZWave stick) Should I bother flashing its firmware to latest?
Do you have other zigbee devices?
I think the innr bulb still should show up in inbox when scanning for zigbee devices. But it probably will leave the network shortly ( if stick firmware is old).