Im making a plugin for BuddyPress and want to add a "register with Linkedin" button to the registration page underneath or above the registration form. I cant figure out how to add to this page. I foud a way to add fields to the form but this is not what I am trying to achieve.
There are several appropriate actions, that you can use. Please refer to /wp-content/plugins/buddypress/bp-templates/bp-legacy/buddypress/members/register.php
In my opinion <?php do_action( 'bp_before_register_page' ); ?> or <?php do_action( 'bp_after_register_page' ); ?> is what you might need.