Conbee II stick failed to connect in ZHA (HA in Pi 4)

Hardware: HA in running in Pi 4
Zigbee coordinator: Conbee II

My Conbee II coordinator was work for some time, but had some issue with connecting few devices. To fix I removed the stick from pi and Deleted it from ZHA. Restarted pi 4 and connected the stick back to begin fresh install in ZHA. During ZHA setup it was able to identify the device

in Serial Port Settings it says “failed to connect”

Not able to setup.

How to troubleshoot and fix it ?