Ring doorbell 2 does need resetting to reconnect

Hi all We’ve had the ring 2 for a while and every time the internet stops working for any length of time, the doorbell disconnects and refuses to reconnect unless I reset it to factory settings What’s worse is that there isn’t even a notification when it goes offline. So we have literally no idea if someone is at the door if it disconnects. I feel like this is not an issue that should happen. What sort of device cannot automatically reconnect to a wifi point? We are using a brand new router from Bt. So it is not like it’s obscure.. Any help would be great. Thanks