Is there a way to resend confirmation emails?

All you would really need to do is trigger wp_new_user_notification for each user. Notice you can filter the email message & subject with the wp_new_user_notification_email filter.

I made a very simple plugin ages ago for adding an action for this to the wordpress user list. Really only made if for a client, no idea why I added this to the WP directory. You can give it a try or browse the code, it’s just a few lines: https://wordpress.org/plugins/re-welcome/

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)