Setting up Dome Siren

Hello, I've been trying to help my parents set up Dome Siren for the Ring system. The instructions for so are very simple as described here https://support.ring.com/hc/en-us/articles/360021290892-Setting-Up-Your-Dome-Siren-in-Your-Ring-App The problem is that "Sirens" does not show up as stated there nor under the Security submenu. Looking at YouTube videos, that's where it should be, but the option is simply not present. After trying to figure out why for a while, I think it's because Ring requires apparently Android 9.0 now and we only have Android 8.0. So we may not be receiving the updates that contain the option. Getting a new phone isn't an option we can look at right away and are seeking if there is another way to install the Dome Siren? I logged into ring.com and can access many of my settings, but do not see an option there to install new devices. Is it there and I'm just missing where? If not, any other options besides just returning Dome Siren?