Cordova (ex. StartApp) ads plugin

Dear developers, who have experience in creating Cordova plugins - I need your help.

In 2019 Lukas Reiner has created a very good plugin for Ionic (Cordova) to show StartApp ads:

This plugin still working well, but ads lib is outdated.
I had created a fork of this project:
I have done next:

  • added current (ex StartApp) ads lib,
  • removed unnecessary permissions,
  • renamed imports,
  • etc

But, now this fork can show only Banner ads.
This fork does not show Interstitial, Rewarded, Splash, Returner ads.
I do not have enough experience in Android Native to debug it.
I will be glad for any help with updating this fork.

Best Regards, Valeriy Skachko