the-events-calendar, pagination with tribe_get_events()

Set the offset manually.

$offset = ( get_query_var( 'page' ) ) ? get_query_var( 'page' ) : my_parse_url_for_offset();

function my_parse_url_for_offset() {
    if( strpos( $_SERVER['REQUEST_URI'], '/page/' ) !== false ) {
        $url = explode( "https://wordpress.stackexchange.com/", $_SERVER['REQUEST_URI'] );
        $url_c = count( $url );

        for( $i = 0; $i < $url_c; $i++ ) {
            if( $url[$i] == 'page' ) {
                if( is_numeric( $url[$i+1] ) )
                    $page = $url[$i+1];
            }
        }
    } else {
        $page = 1;
    }
    return $page;
}

then feed it as an arg in get_posts()