Index: modules/gdpr_consent/src/Plugin/Field/FieldWidget/ConsentWidget.php
===================================================================
--- modules/gdpr_consent/src/Plugin/Field/FieldWidget/ConsentWidget.php	(date 1530262718000)
+++ modules/gdpr_consent/src/Plugin/Field/FieldWidget/ConsentWidget.php	(date 1530262718000)
@@ -118,15 +118,18 @@
       return [];
     }

-    if (!$canEditAnyonesConsent && $consentingUser->id() !== $this->currentUser->id()) {
-      // Abort if the current user does not have permission
-      // to edit other user's consent and we're editing another user.
-      return [];
-    }
+    // The current user is anonymous on the register page.
+    if (!$this->currentUser->isAnonymous()) {
+      if (!$canEditAnyonesConsent && $consentingUser->id() !== $this->currentUser->id()) {
+        // Abort if the current user does not have permission
+        // to edit other user's consent and we're editing another user.
+        return [];
+      }

-    if (!$canEditOwnConsent && $consentingUser->id() === $this->currentUser->id()) {
-      // Abort if the current user cannot edit their own consent.
-      return [];
+      if (!$canEditOwnConsent && $consentingUser->id() === $this->currentUser->id()) {
+        // Abort if the current user cannot edit their own consent.
+        return [];
+      }
     }

     $agreement = ConsentAgreement::load($agreementId);