@kat75444 hi. I have a similar issue to you but I have a work around for it. I need to use this on iOS. Android works fine.
On iOS using the latest YI Home app version with SD installed in my cameras (this issue impacts them all).
If I use the alert option via the camera view live view clicking on the bottom toolbar. I can view the 6 seconds alert and when clicking on complete clip it reverts to love.
If however I go via the Alerts menu from the Home menu I can view the alert sox seconds and when I click on complete clip it plays the full clip.
For clarity I’m using iOS with no paid cloud subscription.
Maybe try this way. Hope it helps.