Ring Doorbell app on my phone doesn't 'alert" me when the doorbell rings

Hello, it appears that the Ring doorbell app is connected to my Pixel 3a smartphone being that I see a notice on my Pixel 3a smartphone that reads "Someone is at your front door" (see attachment) but I do not hear a sound on my phone (advising that the doorbell rang).FYI, my wife has an iPhone 7 that rings (alerts her) when the doorbell rings but my Pixel 3a does not make a sound, it only displays the "Someone is at your front door" message that I would not see unless my phone opened and I am looking at it.So I am contacting you to request your help in advising me on what I need to do to turn on the sound on my Pixel 3a i.e. ALERT ME, when the Ring doorbell rings?Thank you