Oh you have ncid setup?

I’m currently trying yet another call blocker off of fdroid and its not doing a single thing. Do you have to set it as your default phone app? Because I am currently using simple dialer as my default and then yet another call blocker as the default caller ID and spam blocker app… But it isn’t doing a thing. I’m wondering if its because it hasn’t been updated since like 2020 or if I’m using it wrong…