UM and Permalink Manager Lite incompatibility (since UM 2.1.11)

I did some extensive testing and the source of the problem is in the fact that my plugin (Permalink Manager) does not recognize the additional rewrite rules used by Ultimate Member plugin.

There are two ways to make both plugins work together.

You can make my plugin recognize UW permalinks with a custom code snippet:

function pm_detect_um_pages($uri_parts) {
	global $permalink_manager_uris;

	$output = '';

	if(class_exists('UM') && empty($element_id)) {
		$request_url = trim("{$uri_parts['uri']}/{$uri_parts['endpoint_value']}", "/");
		$um_pages = array(
			'user' => 'um_user',
			'account' => 'um_tab',
		);

		// Detect UM permalinks
		foreach($um_pages as $um_page => $query_var) {
			$um_page_id = UM()->config()->permalinks[$um_page];
			// Support for WPML/Polylang
			$um_page_id = (!empty($uri_parts['lang'])) ? apply_filters('wpml_object_id', $um_page_id, 'page', true, $uri_parts['lang']) : $um_page_id;

			if(!empty($um_page_id) && !empty($permalink_manager_uris[$um_page_id])) {
				$user_page_uri = preg_quote($permalink_manager_uris[$um_page_id], '/');
				preg_match("/^({$user_page_uri})\/([^\/]+)?$/", $request_url, $parts);

				if(!empty($parts[2])) {
					$uri_parts['uri'] = $parts[1];
					$uri_parts['endpoint'] = $query_var;
					$uri_parts['endpoint_value'] = sanitize_title($parts[2]);
				}
			}
		}
	}

	return $uri_parts;
}
add_filter('permalink_manager_detect_uri', 'pm_detect_um_pages', 20);

The above snippet will be probably integrated in the next version of Permalink Manager.

Alternatively, you can make my plugin ignore the UM pages:

function pm_ignore_uw_permalinks($custom_uris) {
	global $sitepress;

	if(!is_array($custom_uris)) {
		return $custom_uris;
	}

	$um_pages = array(
		'user',
		'account'
	);

	$excluded_ids = get_transient('pm_uw_excluded_ids');

	// Cache UW permalinks
	if(empty($excluded_ids)) {
		foreach($um_pages as $um_page) {
			$um_page_id = UM()->config()->permalinks[$um_page];

			// Support for WPML
			if(is_object($sitepress) && method_exists($sitepress, 'get_element_translations')) {
				$trid = $sitepress->get_element_trid($um_page_id, 'post_page');
				$page_translations = $sitepress->get_element_translations($trid, 'post_page');
			}

			if(is_array($page_translations)) {
				foreach($page_translations as $page_translation) {
					if(property_exists($page_translation, 'element_id')) {
						$excluded_ids[] = $page_translation->element_id;
					}
				}
			} else {
				$excluded_ids[] = $um_page_id;
			}
		}

		set_transient('pm_uw_excluded_ids', $excluded_ids, DAY_IN_SECONDS);
	}

	foreach($excluded_ids as $page_id) {
		unset($custom_uris[$page_id]);
	}

	return $custom_uris;
}
add_filter('permalink_manager_uris', 'pm_ignore_uw_permalinks', 9);

Best regards,
Maciej