Says my wired Ring Pro system is at level 3

Just had my Ring Pro installed and upon checkout some things, saw a message about my system being at level 3 which they suggest that it could be because of old wiring. The home was built in 1953 and that wiring for the doorbell has never been updated. So, I don't know what to do. Should I have purchased a battery-operated system instead of the wired type? Any help/suggestions will be appreciated.