Read the email and understand the policy that Google cited that your app has violated.
It probably has nothing to do with Kodular. Here are a few policies that WebView easily violates:
API policies like YouTube API - If your site has YouTube video, in WebView a times the video can continue playing in the background which is a violation of YouTube Policy. You may also monetize the app with YouTube video playing and your ads are also showing, that’s another violation.
Your app is an online store and I can see you have integrated payment options, google never like it when people buy goods from your app through other payment options except Play store Billing API.
Those among other policies usually cause confusion during app reviews leading to suspension or declination of app approval So my advice is that you reread the email, know exactly what policy they claim you violated, let us know about it then we can assist you. .
And your question is. The problem is clear. Before making an app you should educate yourself if Google will accept it. A lot off users only think about making money while using products from other people. Google doesn’t like that.