Cannot delete any of the videos, none. Checking delete all and then selecting delete, does not work.
I have the same issue
I have had the same problem. If I keep going back to delete them they end up deleted but what a pain.
This fixed it for me… Maybe for you as well. It also fixed not saving events to the events listing.
For android:
Go to settings (on the phone not the app) go to apps and click. Scroll to the eufy app and click on it. click on storage and go to the bottom of that screen and clear BOTH Data and Cache. You will need to log back in on the eufy app when you open it next time. This worked for me hope it does so permanently.