If you prefer to sign-in with Google rather than with a traditional email/password, you can easily do it via the signup page.
Note - This option only applies to new accounts - if you already have an existing account created with email/password, you should keep using that one.
To sign-in with Google, all you need to do is click the 'Sign up with Google' button upon signup, and authenticate on the Google page that pops out.
From now on, you can log-in to your Podcastpage account, by using the 'Login with Google' button instead of using the default email and password fields.
If your browser blocks pop-ups, you must enable those temporarily in order to authenticate your Google Account. Also, signing in with Google does not work in "Private" or "Incognito" sessions of your browser.