Cannot optimize mobile theme

Hi!

Installed AO 2.0.2.
I’m using custom mobile swithing plugin: it detects mobile browsers and switches to mobile WP theme.
The problem is: AO works fine on desktop version (http://dev2.kuponarama.ru/) but on mobile (http://m.dev2.kuponarama.ru/) it works only for html and inlined CSS and JS – so it cannot optimize external CSS (for example with URL “/wp-content/themes/mobile/css/all.css”).

Some theme switching code:

case "m.dev2.kuponarama.ru":
			define('WP_HOME', 'http://m.dev2.kuponarama.ru');
			define('WP_SITEURL','http://m.dev2.kuponarama.ru');
			//define('WP_CONTENT_URL','http://m.dev2.kuponarama.ru/wp-content');
			break;

Changing theme:

/**
 * @return mobile theme name
 */
function kuponarama_getMobileTheme() {
	switch($_SERVER["HTTP_HOST"]) {
		case "m.kuponarama.ru":
		case "m.dev.kuponarama.ru":
		case "m.dev2.kuponarama.ru":
			return "mobile";
		case "dev.kuponarama.ru":
		case "kuponarama.ru":
		case "www.kuponarama.ru":
			return "clipper-child";
	}
}

function ts_get_template($template) {
	$theme = kuponarama_getMobileTheme();
	if (empty($theme)) {
		return $template;
	}
	$theme = ts_get_one_theme($theme);
	if (empty($theme)) {
		return $template;
	}
	// Don't let people peek at unpublished themes.
	if (isset($theme['Status']) && $theme['Status'] != 'publish')
	return $template;
	return $theme['Template'];
}
add_filter('template', 'ts_get_template');

function ts_get_stylesheet($stylesheet) {
	$theme = kuponarama_getMobileTheme();
	if (empty($theme)) {
		return $stylesheet;
	}
	$theme = ts_get_one_theme($theme);
	// Don't let people peek at unpublished themes.
	if (isset($theme['Status']) && $theme['Status'] != 'publish')
	return $stylesheet;
	if (empty($theme)) {
		return $stylesheet;
	}
	return $theme['Stylesheet'];
}
add_filter('stylesheet', 'ts_get_stylesheet');

// helper function to replace get_theme()
function ts_get_one_theme($theme) {
	$themes = wp_get_themes();
	if (array_key_exists($theme, $themes))
	return $themes[$theme];
	return NULL;
}

https://ww.wp.xz.cn/plugins/autoptimize/