My Eufy security app (iOS) was updated today, and when I ‘select all’ videos on a day and delete, the videos DO NOT delete. The only way to delete video is to delete ‘all’ from the Homebase menu.
I hope they fix this soon!
EDIT: I have to make a confession here, in that I experienced this on my iPad Pro which I am currently using with iPadOS14 Developer beta, and the reason it doesn’t work is that Eufy haven’t updated for iPadOS14 yet. It’s working fine on my non-updated iPhone