Admob test ads stuck

Questions
#1

I am using Defold admob extention(https://github.com/defold/extension-admob) .

For reducing load time for rewarded ads I am calling load_rewarded() in start of app and for loading next rewarded ad after first ad is shown in callback (Event closed Rewarded AD closed).

Showing ads only when show ad button is clicked. But In some cases when their is long time period between load_rewarded() call and show ad button clicked ads get stuck.

Eg. load_rewarded() called in start of app and show rewarded ad button clicked in level 10 or 12 after long time.

#2

For producing this you can build admob extention project for android opt for rewarded ad , click load ad and after long time even after show ad button is visible click show ad after very long time.

It will be nice if someone give suggestions on how to use rewarded ad and decrease load time best practices.

#3

Perhaps there’s a time limit when a preloaded ad is no longer valid?