Issue in reverb

I am using laravel reverb in laravel version 11 . after install i test in postman using potman ws . there i paste ws url with reverb app_key and connect it show that connected but if open 2 window window1 send message to window2 the messge not show in window2 response same form winsow 2 to 1. So how can it solve. i have tried many solution but still not work