Delete events altogether

How do i delete all events instead of going in each day and deleting by day only

Go to homebase and format the card

it depends on the eufy camera you have. for the 2c cameras on an android phone go to your device page in the app. scroll down to your homebase and click on that. you should see storage, click on that, you should see clear storage, click on that. this will delete all events so make sure any videos you want to keep have been downloaded.