In my one of project regarding phone signin I did all the steps in document correctly but while testing it on IOS testflight it gives me error the error message is:
Error: An Internal error has occured, print and .inspect the error details for more information.
I thought this issue was from firebase and contacted their support they asked me to enable reCAPTCHA enterprise API after that phone signin working on web but on IOS Tesflight new error shows which is Error:
"The reCAPTCHA SDK is not linked to your app. See https://cloud.google.com/recaptcha-enterprise/docs/instrument-ios-apps."
Thanks!