diff --git a/src/classes/Pollers/Profile.php b/src/classes/Pollers/Profile.php
index 9b12aef..ca43237 100644
--- a/src/classes/Pollers/Profile.php
+++ b/src/classes/Pollers/Profile.php
@@ -9,6 +9,10 @@ use Friendica\Directory\Utils\Network;
  */
 class Profile
 {
+	const PROFILE_MISSING_REQUEST = 1;
+	const PROFILE_MISSING_CONFIRM = 2;
+	const PROFILE_MISSING_NOTIFY = 4;
+	const PROFILE_MISSING_POLL = 8;
 
 	/**
 	 * @var \Atlas\Pdo\Connection
@@ -171,8 +175,21 @@ class Profile
 		}
 
 		// This is most likely a problem with the site configuration. Ignore.
-		if (self::validateParams($params)) {
+		if ($error = self::validateParams($params)) {
 			$this->logger->warning('Poll aborted, parameters invalid.', ['params' => $params]);
+			if ($error & Profile::PROFILE_MISSING_REQUEST) {
+				$this->logger->notice('dfrn-request parameter is empty.');
+			}
+			if ($error & Profile::PROFILE_MISSING_CONFIRM) {
+				$this->logger->notice('dfrn-confirm parameter is empty.');
+			}
+			if ($error & Profile::PROFILE_MISSING_NOTIFY) {
+				$this->logger->notice('dfrn-notify parameter is empty.');
+			}
+			if ($error & Profile::PROFILE_MISSING_POLL) {
+				$this->logger->notice('dfrn-poll parameter is empty.');
+			}
+
 			return false;
 		}
 
@@ -330,23 +347,24 @@ class Profile
 		return true;
 	}
 
+	/**
+	 * @param array $params
+	 * @return int
+	 */
 	private static function validateParams(array $params): int
 	{
 		$errors = 0;
-		if (empty($params['key'])) {
-			$errors++;
-		}
 		if (empty($params['dfrn-request'])) {
-			$errors++;
+			$errors &= self::PROFILE_MISSING_REQUEST;
 		}
 		if (empty($params['dfrn-confirm'])) {
-			$errors++;
+			$errors &= self::PROFILE_MISSING_CONFIRM;
 		}
 		if (empty($params['dfrn-notify'])) {
-			$errors++;
+			$errors &= self::PROFILE_MISSING_NOTIFY;
 		}
 		if (empty($params['dfrn-poll'])) {
-			$errors++;
+			$errors &= self::PROFILE_MISSING_POLL;
 		}
 
 		return $errors;
diff --git a/src/classes/Utils/Scrape.php b/src/classes/Utils/Scrape.php
index 758147c..2189b58 100644
--- a/src/classes/Utils/Scrape.php
+++ b/src/classes/Utils/Scrape.php
@@ -129,7 +129,7 @@ class Scrape
 
 		$nodes_left = max(intval($max_nodes), $minNodes);
 		$items = $dom->getElementsByTagName('*');
-		$targets = array('fn', 'pdesc', 'photo', 'key', 'locality', 'region', 'postal-code', 'country-name');
+		$targets = array('fn', 'pdesc', 'photo', 'locality', 'region', 'postal-code', 'country-name');
 		$targets_left = count($targets);
 		foreach ($items as $item) {
 			if (self::attributeContains($item->getAttribute('class'), 'vcard')) {
@@ -147,10 +147,6 @@ class Scrape
 						$params['photo'] = $vcard_element->getAttribute('src');
 						$targets_left = self::popScrapeTarget($targets, 'photo');
 					}
-					if (self::attributeContains($vcard_element->getAttribute('class'), 'key')) {
-						$params['key'] = $vcard_element->textContent;
-						$targets_left = self::popScrapeTarget($targets, 'key');
-					}
 					if (self::attributeContains($vcard_element->getAttribute('class'), 'locality')) {
 						$params['locality'] = $vcard_element->textContent;
 						$targets_left = self::popScrapeTarget($targets, 'locality');