You can’t choose notifications with the SmartLocks app. It’s a basic app for lock programming.
For customization you’ll need a third party app. If you have access to rboy apps, you can check the very popular LUM app. You can control notifications for individual users, assign permanent user codes, scheduled user codes, burner codes, presence based users, actions to execute when codes are used to lock and unlock, set conditions for notifications and lots more. More details on the link below
This is because of the nature of the mesh. In short you’ll have to add a repeater between your lock and your hub. It’s explained in much more detail here:
That’s correctly, 99% of mains powered Z-Wave Plus devices (with the exception of bulbs) are repeaters. That’s also explained in detail in the link above which talks about repeaters. It doesn’t need to be specific to Z-Wave lock, a repeater basically buffers and repeats the messages for all devices. Battery powered devices not repeat (very very few exceptions to this rule).
Since this devices is powered by 120/240v and is a Z-Wave Plus certified device it should act as a repeater. (the thermostat specs says that all non battery powered devices should be repeaters, kinda round about way to say that this device should be a repeater)