How can I remove the zoom button from the webviewer screen ''as a non programmer''?

Hi, this is the link Hi, I found a free chat box named 'tawk.to' and placed the chat box link within webview block in mit app inventer. Its working fine except 'file upload' feature. Can someone help? , in which I tried customwebview extension and it didn't work for that specific need.

Is there a way to combine CustomWebView extension in the same project/app to solve this current need?