how two change the send name as i received cloud OTP and last line received as appname.firebase.com how to change both these name. Screenshot attached

Question

i want to change Sender name as it is sent by cloud OTP and i want to change it by project name in flutter and also last line it is not user friendly . how to change both these if anyone know please tell me and Screenshot is attached. Please see both issues one is Cloud OTP and second one is last line as I get about firebase i wanna change both them Screenshot is attached