ivo-ivanov

add_action('admin_head', 'admin_css');

function admin_css() {
  echo '<style>
    .acf-gallery .acf-gallery-side-data textarea {
		display: none;
	}
  </style>';
}

ivo-ivanov

//Disable all default block types and allow custom blocks
add_filter( 'allowed_block_types', 'show_only_custom_blocks' );
 
function show_only_custom_blockss( $allowed_blocks ) {
 
	return array(
		'custom-block-category/text',
	);
 
}