Email Verification Steps - (2 steps via mobile AND no steps on WEB)

So, our application is deployed on Web & on PlayStore. We have added a Verify Email step during registration.
The issue is web user tries to registers from the web and when he clicks on the verify email link which was send to his email, it automatically verifies and redirects it to the application homepage.
BUT, when he registers from mobile app and tries to open the link then on his email then a window pops up where he has to again click “Click here to proceed” → Then he is verified.

Why is this happening?
Why it doesn’t happen on the web?
How to make it one step only like in web?

This Already verified Sign In button was added by us.