I am directing a user to trustpilot in a webview where they can make a review. I want the user to stay in the app while reviewing so I don't want to open an external browser. The user should be able to sign in with Google or Facebook to make the review, but currently their only option is by email.
I am aware that Google blocks OAuth requests from embedded browsers, but what can I do to allow users to sign in with their Google or Facebook accounts on a webview?
In case it changes anyone's answer, the webpage in the WebView is not my own, so I cannot make any changes in the html.
The issue I have can be seen in this video: