Solution.
Because I have 3 separately button, I had to change the original impulse relay to Shelly 1. O / 2 , I / A1 , SW / A2.
Its working properly.
My biggest problem when I tried to put Shelly behind the switch was I couldnt put Shelly 1 to Impulse mode. I set the relay button mode, but when it got an impulse closed the O/I circuit. When I put the "momentary switch" option, It work, but I got false result in the Home application. The lamp switched on , but the application seemed off.