MOBILE-4059 core: Fix support help for guests

src/core/features/login/pages/credentials/credentials.ts

@@ -138,6 +138,7 @@ export class CoreLoginCredentialsPage implements OnInit, OnDestroy {
         CoreUserSupport.showHelp(
             Translate.instant('core.login.credentialshelp'),
             Translate.instant('core.login.credentialssupportsubject'),
+            this.supportConfig,
         );
     }
 

src/core/features/login/pages/reconnect/reconnect.ts

@@ -149,6 +149,7 @@ export class CoreLoginReconnectPage implements OnInit, OnDestroy {
         CoreUserSupport.showHelp(
             Translate.instant('core.login.reconnecthelp'),
             Translate.instant('core.login.reconnectsupportsubject'),
+            this.supportConfig,
         );
     }
 

src/core/features/user/services/support.ts

@@ -25,6 +25,7 @@ import { CoreSubscriptions } from '@singletons/subscriptions';
 import { AlertButton } from '@ionic/angular';
 import { CoreDomUtils } from '@services/utils/dom';
 import { CoreLang } from '@services/lang';
+import { CoreUserNullSupportConfig } from '@features/user/classes/support/null-support-config';
 
 /**
  * Handle site support.
@@ -57,10 +58,15 @@ export class CoreUserSupportService {
      * @param message Help message.
      * @param supportSubject Support subject.
      */
-    showHelp(message: string, supportSubject: string): void {
+    showHelp(message: string, supportSubject: string, supportConfig?: CoreUserSupportConfig): void {
-        const supportConfig = CoreUserAuthenticatedSupportConfig.forCurrentSite();
         const buttons: (AlertButton | string)[] = [];
 
+        if (!supportConfig) {
+            const site = CoreSites.getCurrentSite();
+
+            supportConfig = site ? new CoreUserAuthenticatedSupportConfig(site) : new CoreUserNullSupportConfig();
+        }
+
         if (supportConfig.canContactSupport()) {
             buttons.push({
                 text: Translate.instant('core.contactsupport'),