Session fails when lock the screen

I’m using Focus Plant for months and I’ve been always locking the screen while the session is going. But for 2 days session fails when I lock the screen. How can I solve this?

I also lock my screen and my session goes through just fine.

Can you please check the update again, the latest version is 2.4.3 on the focus plants app. Please visit the following page on the google play store or the app store to update the app. It already fixed an issue on the current build.