In the archive there was no plug-in for android .. what to do? -> https://prnt.sc/hp1mko
gives an error message E/Unity: AndroidJavaException: java.lang.ClassNotFoundException: inappbrowser.kokosoft.com.Helper.
Hi,
This is Asset Store bug and Unity dev team was informed several times about it (didn’t do anything though). Try to simply re-download and re-import plugin.