Twitter login not saving user email in correct field

Hi @marcelo2605

First please make sure you have the Email set to be Stored at Nextend Social Login>Global Settings>Privacy tab.
When it is not ticked, the email address will be empty:
https://nextendweb.com/nextend-social-login-docs/global-settings-privacy/

If you have it enabled then the problem will be probably related to a missed step of our Getting Started section, probably the 12th.
Could you check if your Twitter App has the “Request email address from users” ticked at its Permission tab?

If the problem would still persists even when the email is requested, then we will need to take a look at your settings. For this please open a support ticket at:
https://nextendweb.com/contact-us/nextend-social-login-support/?ref=https://wordpress.org/support/topic/twitter-login-not-saving-user-email-in-correct-field/

Best regards,
Laszlo.