Try restart your device
Clear cache then try
I think you have downloaded the app from playstore. It's the apps issue and not the device. The app seems to have compatibility issue. Try using some other app.
Are you using some third party launcher or any other app downloaded from playstore. It you are not able to have a preview of your live wallpaper then it seems to be a app or launcher issue.
Yes I am using a third party Launcher.
Most welcome 👍👍
How do I do that?
What wallpaper app is that?
Clear data and cache
A peek behind the curtain – OnePlus phone colorways
by Andy Liu., 2021-04-13