Changes the default Please Sign In or Create an account text above WP Video Membership Sign In & Registration form.

function my_custom_wpvs_sign_in_create_account_text( $sign_in_text ) {
    $sign_in_text = 'Login In or Register'; // your custom text here
    return $sign_in_text;
}
add_filter( 'wpvs_custom_sign_in_create_account_text', 'my_custom_wpvs_sign_in_create_account_text');

Changes the default Please Sign In text above WP Video Membership Sign In form when registration is disabled.

function my_custom_wpvs_sign_in_text( $sign_in_text ) {
    $sign_in_text = 'Sign In'; // your custom text here
    return $sign_in_text;
}
add_filter( 'wpvs_custom_sign_in_only_text', 'my_custom_wpvs_sign_in_text');