Motion Sensor flashing rapidly

Hi, I have a motion sensor that went offline twice. This morning, when I tried to "retry connection", after I opened the case to "tamper" with the device, the blue LED started flashing rapidly. What does that mean? And how do I get the motion sensor to function normally again? I tried to follow this guide: [https://support.ring.com/hc/en-us/articles/360000071906-How-to-Completely-Reset-Your-Alarm-Devices](https://support.ring.com/hc/en-us/articles/360000071906-How-to-Completely-Reset-Your-Alarm-Devices) But even when I use a paperclip to hold down the button behind the pinhole on the back for 30 seconds, the rapid flashing doesn't stop. I tried taking the battery out and putting it back, it's still flashing. Do I have a bad motion sensor? And by the way, the sensor is about 10 feet from the closest range extender (which has been online without interruption) without anything in between. Why does it keep going offline in the first place? Thanks for your help!