Diagnosis
This is almost always a microSD card issue or a problem with your Cam Plus subscription settings (if you're using one). The camera isn't saving the clips it detects.
How to Fix It
First, check your microSD card. In the Wyze app, go to the camera's view, tap the settings gear, then 'Advanced Settings', then 'Local Storage'. See if it shows your card's capacity and free space. If it says 'No SD Card', it's not seated properly or has failed. Power down, remove the card, reinsert it firmly until it clicks, and power back on. If it's detected, try formatting it through the app.
If That Didn't Work
Check your event recording rules. Tap 'Events' in the camera settings. Ensure 'Record to MicroSD Card' is toggled ON. If you have Cam Plus, also check that 'Event Recording' is ON there. Sometimes after an app update, these settings get reset.
Heads Up
Not all microSD cards work reliably. Wyze recommends using a High Endurance card, not just any old card from a drawer. Cheap cards wear out quickly with constant writing and can cause this exact problem.