Ring doorbell 3 not ringing

I've been having issues with my doorbell not ringing when someone is pressing the button from outside. I also get no notification on my phone. Motion detection is working fine though. Any ideas why? I also have issues with activating live view, it can take up to 6 attempts if not longer before displaying. Any help would be great 👍 oh and I only purchased at the beginning of Dec 2020 Thank you