How to enable OAuth on webViewer on X platform?

I am using sign in form using thunkable (classic and x platform) I cant make Oauth connection since the webViewer is not supporting this issue
What can I do ?

Can you do it in the Thunkable Classic?

yes I have done this

To repeat this in Thunkable X there is no necessary functionality or the problem is different?

oauth1

I used extended webviewer extension and enabled oauth on my webiewer in thunkable classic
but on x platform there is no extensions so the browser (webviewer ) is not supported on oauth authentication [ Error: disallowed_user agent]
something like this

Clear. So, it is still impossible to do.