How to fix leadbolt ad problem

i added leadbolt ads in my app , when we open app no ads showing i checked after 2 days but same resultsScreenshot%20(124) Screenshot%20(125)

Is your app approved?
Is it on play store?
What is error message when ad failed to load?

yes my app is approved but not uploaded yet on playstore with leadbolt ads. i shared gdrive link to them.
no message showing on failed to load.