White triangle , Exclamation mark on doorbell

Yesterday I saw a hooded man walking away from my door. 3 minutes later my doorbell came up blank. Black screen with a white exclamation mark in the right corner, and it’s says, your doorbell isn’t connected to your wifi.  My stick up camera inside is still connected to Wi-Fi, but my doorbell isn’t after the man walked away from my door. I’ve checked for any down time on the system but it says the 1st 2nd and 3rd today there isn’t any down time😳 Think my camera has been compromised and the man walking away was using some kind of jammer or scrambler. HELP WHAT DO I DO. The battery is fine.