False Alarm at 1:42 in the morning...

I've had my ring security system for about 2 weeks. I have a bunch of ring open/close sensors and one motion sensor. I also have a ring doorbell and 4 ring cameras. I had the system armed/home while we slept and was awoken to an alarm at 1:42AM. I got my gun, turned off the alarm and checked the house. Nothing. I checked the app and it said my patio sliding door sensor was tampered. Its 8' high on the top of the door. It seemed fine. Am I going to be able to trust this system?? Why would this have happened?? Can I disable a tamper from setting off the alarm?