diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/grouple/AllHentaiParser.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/grouple/AllHentaiParser.kt
index b3936f8e..087cd8f0 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/grouple/AllHentaiParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/grouple/AllHentaiParser.kt
@@ -8,19 +8,14 @@ import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.MangaChapter
 import org.koitharu.kotatsu.parsers.model.MangaPage
 import org.koitharu.kotatsu.parsers.model.MangaSource
-import org.koitharu.kotatsu.parsers.util.domain
-import org.koitharu.kotatsu.parsers.util.parseFailed
-import org.koitharu.kotatsu.parsers.util.parseHtml
-import org.koitharu.kotatsu.parsers.util.urlEncoded
+import org.koitharu.kotatsu.parsers.util.*
 
 @MangaSourceParser("ALLHENTAI", "ALlHentai", "ru")
 internal class AllHentaiParser(
 	context: MangaLoaderContext,
 ) : GroupleParser(context, MangaSource.ALLHENTAI, 1) {
 
-	override val configKeyDomain = ConfigKey.Domain(
-		"2023.allhen.online",
-	)
+	override val configKeyDomain = ConfigKey.Domain("2023.allhen.online")
 	override val defaultIsNsfw = true
 
 	override val authUrl: String
@@ -29,6 +24,9 @@ internal class AllHentaiParser(
 			return "https://qawa.org/internal/auth/login?targetUri=$targetUri&siteId=1"
 		}
 
+	override val isAuthorized: Boolean
+		get() = context.cookieJar.getCookies(domain).any { it.name == "trSessionId" }
+
 	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
 		try {
 			return super.getPages(chapter)
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/grouple/GroupleParser.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/grouple/GroupleParser.kt
index 12ab60b0..910a8078 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/grouple/GroupleParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/grouple/GroupleParser.kt
@@ -336,7 +336,8 @@ internal abstract class GroupleParser(
 		val tagsIndex = webClient.httpGet(url).parseHtml()
 			.body().selectFirst("form.search-form")
 			?.select("div.form-group")
-			?.get(1) ?: throw ParseException("Genres filter element not found", url)
+			?.find { it.selectFirst("li.property") != null }
+			?: throw ParseException("Genres filter element not found", url)
 		val tagNames = tags.map { it.title.lowercase() }
 		val payload = HashMap<String, String>()
 		var foundGenres = 0
@@ -372,7 +373,7 @@ internal abstract class GroupleParser(
 		response.isSuccessful && response.headersContentLength() >= MIN_IMAGE_SIZE
 	}.getOrDefault(false)
 
-	private fun Response.checkAuthRequired(): Response {
+	protected fun Response.checkAuthRequired(): Response {
 		val lastPathSegment = request.url.pathSegments.lastOrNull() ?: return this
 		if (lastPathSegment == "login") {
 			throw AuthRequiredException(source)
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/util/Parse.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/util/Parse.kt
index d1aecc44..342b71cf 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/util/Parse.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/util/Parse.kt
@@ -76,10 +76,11 @@ fun String.toAbsoluteUrl(domain: String): String = when {
 fun concatUrl(host: String, path: String): String {
 	val hostWithSlash = host.endsWith('/')
 	val pathWithSlash = path.startsWith('/')
+	val hostWithScheme = if (host.startsWith("//")) "https:$host" else host
 	return when {
-		hostWithSlash && pathWithSlash -> host + path.drop(1)
-		!hostWithSlash && !pathWithSlash -> "$host/$path"
-		else -> host + path
+		hostWithSlash && pathWithSlash -> hostWithScheme + path.drop(1)
+		!hostWithSlash && !pathWithSlash -> "$hostWithScheme/$path"
+		else -> hostWithScheme + path
 	}
 }
 
diff --git a/src/test/kotlin/org/koitharu/kotatsu/parsers/MangaParserTest.kt b/src/test/kotlin/org/koitharu/kotatsu/parsers/MangaParserTest.kt
index f61eb77a..19e132ab 100644
--- a/src/test/kotlin/org/koitharu/kotatsu/parsers/MangaParserTest.kt
+++ b/src/test/kotlin/org/koitharu/kotatsu/parsers/MangaParserTest.kt
@@ -79,7 +79,7 @@ internal class MangaParserTest {
 		assert(keys.isDistinct())
 		assert("" !in keys)
 		val titles = tags.map { it.title }
-//		assert(titles.isDistinct())
+		assert(titles.isDistinct())
 		assert("" !in titles)
 		assert(tags.all { it.source == source })
 
@@ -89,6 +89,25 @@ internal class MangaParserTest {
 		assert(list.all { it.source == source })
 	}
 
+	@ParameterizedTest(name = "{index}|tags_multiple|{0}")
+	@MangaSources
+	fun tagsMultiple(source: MangaSource) = runTest {
+		val parser = source.newParser(context)
+		val tags = parser.getTags().shuffled().take(2).toSet()
+
+		val list = try {
+			parser.getList(offset = 0, tags = tags, sortOrder = null)
+		} catch (e: IllegalArgumentException) {
+			if (e.message == "Multiple genres are not supported by this source") {
+				return@runTest
+			} else {
+				throw e
+			}
+		}
+		checkMangaList(list, "${tags.joinToString { it.title }} (${tags.joinToString { it.key }})")
+		assert(list.all { it.source == source })
+	}
+
 	@ParameterizedTest(name = "{index}|details|{0}")
 	@MangaSources
 	fun details(source: MangaSource) = runTest {
@@ -163,10 +182,7 @@ internal class MangaParserTest {
 	fun domain(source: MangaSource) = runTest {
 		val parser = source.newParser(context)
 		val defaultDomain = parser.domain
-		val url = HttpUrl.Builder()
-			.host(defaultDomain)
-			.scheme("https")
-			.toString()
+		val url = HttpUrl.Builder().host(defaultDomain).scheme("https").toString()
 		val response = context.doRequest(url, source)
 		val realUrl = response.request.url
 		val realDomain = realUrl.topPrivateDomain()