@EmilianoRuiz
Hi,
After the problem happens, you can try to tap the "Reboot Camera" button on the Tapo app>Camera Settings page of the Tapo C500 to reboot the camera and then check if the camera will recognize the SD card again. And please ensure the firmware of the Tapo C500 is up to date to achieve new features or good performance.
If the problem remains, please help confirm the following information for further analysis.
1. What's the model number, capacity, and format of the SD card?
2. Please refer to the link below to verify if the SD card is fake, and please send me a picture of the test result on the H2testw tool.
How to Verify Fake Micro SD Cards??
3. Please send me a picture of the error message displayed on the Tapo app about the SD card.
4. What's the model number and OS version of your phone?
Best Regards