diff --git a/src/addon/mod/lti/components/index/index.html b/src/addon/mod/lti/components/index/index.html
index e80a89554..049830e41 100644
--- a/src/addon/mod/lti/components/index/index.html
+++ b/src/addon/mod/lti/components/index/index.html
@@ -3,7 +3,7 @@
     <core-context-menu>
         <core-context-menu-item *ngIf="externalUrl" [priority]="900" [content]="'core.openinbrowser' | translate" [href]="externalUrl" [iconAction]="'open'"></core-context-menu-item>
         <core-context-menu-item *ngIf="description" [priority]="800" [content]="'core.moduleintro' | translate" (action)="expandDescription()" [iconAction]="'arrow-forward'"></core-context-menu-item>
-        <core-context-menu-item *ngIf="loaded && !hasOffline && isOnline" [priority]="700" [content]="'core.refresh' | translate" (action)="doRefresh(null, $event)" [iconAction]="refreshIcon" [closeOnClick]="false"></core-context-menu-item>
+        <core-context-menu-item *ngIf="loaded && isOnline" [priority]="700" [content]="'core.refresh' | translate" (action)="doRefresh(null, $event)" [iconAction]="refreshIcon" [closeOnClick]="false"></core-context-menu-item>
     </core-context-menu>
 </core-navbar-buttons>
 
@@ -12,12 +12,10 @@
 
     <core-course-module-description [description]="description" [component]="component" [componentId]="componentId"></core-course-module-description>
 
-    <div padding-horizontal *ngIf="isValidUrl">
+    <div padding-horizontal>
         <button ion-button block icon-left (click)="launch()">
             <ion-icon name="link"></ion-icon>
             {{ 'addon.mod_lti.launchactivity' | translate }}
         </button>
     </div>
-
-    <ion-card class="core-info-card" *ngIf="!isValidUrl">{{ 'addon.mod_lti.errorinvalidlaunchurl' | translate }}</ion-card>
 </core-loading>
diff --git a/src/addon/mod/lti/components/index/index.ts b/src/addon/mod/lti/components/index/index.ts
index 4c81f8786..8f0168a99 100644
--- a/src/addon/mod/lti/components/index/index.ts
+++ b/src/addon/mod/lti/components/index/index.ts
@@ -14,7 +14,6 @@
 
 import { Component, Optional, Injector } from '@angular/core';
 import { Content } from 'ionic-angular';
-import { CoreUrlUtilsProvider } from '@providers/utils/url';
 import { CoreCourseModuleMainActivityComponent } from '@core/course/classes/main-activity-component';
 import { AddonModLtiProvider } from '../../providers/lti';
 
@@ -30,14 +29,12 @@ export class AddonModLtiIndexComponent extends CoreCourseModuleMainActivityCompo
     moduleName = 'lti';
 
     lti: any; // The LTI object.
-    isValidUrl: boolean;
 
     protected fetchContentDefaultError = 'addon.mod_lti.errorgetlti';
 
     constructor(injector: Injector,
             @Optional() protected content: Content,
-            private ltiProvider: AddonModLtiProvider,
-            private urlUtils: CoreUrlUtilsProvider) {
+            private ltiProvider: AddonModLtiProvider) {
         super(injector, content);
     }
 
@@ -47,7 +44,7 @@ export class AddonModLtiIndexComponent extends CoreCourseModuleMainActivityCompo
     ngOnInit(): void {
         super.ngOnInit();
 
-        this.loadContent(false, true);
+        this.loadContent();
     }
 
     /**
@@ -68,13 +65,8 @@ export class AddonModLtiIndexComponent extends CoreCourseModuleMainActivityCompo
     protected fetchContent(refresh: boolean = false, sync: boolean = false, showErrors: boolean = false): Promise<any> {
         return this.ltiProvider.getLti(this.courseId, this.module.id).then((ltiData) => {
             this.lti = ltiData;
-
-            return this.ltiProvider.getLtiLaunchData(ltiData.id).then((launchData) => {
-                this.lti.launchdata = launchData;
-                this.description = this.lti.intro || this.description;
-                this.isValidUrl = this.urlUtils.isHttpURL(launchData.endpoint);
-                this.dataRetrieved.emit(this.lti);
-            });
+            this.description = this.lti.intro || this.description;
+            this.dataRetrieved.emit(this.lti);
         }).then(() => {
             // All data obtained, now fill the context menu.
             this.fillContextMenu(refresh);
@@ -101,18 +93,18 @@ export class AddonModLtiIndexComponent extends CoreCourseModuleMainActivityCompo
      * Launch the LTI.
      */
     launch(): void {
-        // "View" LTI.
-        this.ltiProvider.logView(this.lti.id).then(() => {
-            this.checkCompletion();
-        }).catch((error) => {
-            // Ignore errors.
-        });
+        this.ltiProvider.getLtiLaunchData(this.lti.id).then((launchData) => {
+            // "View" LTI.
+            this.ltiProvider.logView(this.lti.id).then(() => {
+                this.checkCompletion();
+            }).catch((error) => {
+                // Ignore errors.
+            });
 
-        // Launch LTI.
-        this.ltiProvider.launch(this.lti.launchdata.endpoint, this.lti.launchdata.parameters).catch((message) => {
-            if (message) {
-                this.domUtils.showErrorModal(message);
-            }
+            // Launch LTI.
+            return this.ltiProvider.launch(launchData.endpoint, launchData.parameters);
+        }).catch((message) => {
+            this.domUtils.showErrorModalDefault(message, 'core.error', true);
         });
     }
 }
diff --git a/src/addon/mod/lti/pages/index/index.html b/src/addon/mod/lti/pages/index/index.html
index 456646402..ffcf3f1f0 100644
--- a/src/addon/mod/lti/pages/index/index.html
+++ b/src/addon/mod/lti/pages/index/index.html
@@ -8,5 +8,9 @@
     </ion-navbar>
 </ion-header>
 <ion-content>
+    <ion-refresher [enabled]="ltiComponent.loaded" (ionRefresh)="ltiComponent.doRefresh($event)">
+        <ion-refresher-content pullingText="{{ 'core.pulltorefresh' | translate }}"></ion-refresher-content>
+    </ion-refresher>
+
     <addon-mod-lti-index [module]="module" [courseId]="courseId" (dataRetrieved)="updateData($event)"></addon-mod-lti-index>
 </ion-content>
diff --git a/src/addon/mod/lti/providers/lti.ts b/src/addon/mod/lti/providers/lti.ts
index be87ee4ac..f2a453ce6 100644
--- a/src/addon/mod/lti/providers/lti.ts
+++ b/src/addon/mod/lti/providers/lti.ts
@@ -135,7 +135,12 @@ export class AddonModLtiProvider {
         const params: any = {
             toolid: id
         };
+
+        // Try to avoid using cache since the "nonce" parameter is set to a timestamp.
         const preSets = {
+            getFromCache: false,
+            saveToCache: true,
+            emergencyCache: true,
             cacheKey: this.getLtiLaunchDataCacheKey(id)
         };
 
@@ -192,7 +197,7 @@ export class AddonModLtiProvider {
 
         // Generate launcher and open it.
         return this.generateLauncher(url, params).then((url) => {
-            this.utils.openInApp(url).show();
+            this.utils.openInApp(url);
         });
     }
 
@@ -203,14 +208,10 @@ export class AddonModLtiProvider {
      * @return {Promise<any>} Promise resolved when the WS call is successful.
      */
     logView(id: string): Promise<any> {
-        if (id) {
-            const params: any = {
-                ltiid: id
-            };
+        const params: any = {
+            ltiid: id
+        };
 
-            return this.sitesProvider.getCurrentSite().write('mod_lti_view_lti', params);
-        }
-
-        return Promise.reject(null);
+        return this.sitesProvider.getCurrentSite().write('mod_lti_view_lti', params);
     }
 }