diff --git a/src/addons/blog/pages/entries/entries.ts b/src/addons/blog/pages/entries/entries.ts
index 1e92dcc30..165f1f405 100644
--- a/src/addons/blog/pages/entries/entries.ts
+++ b/src/addons/blog/pages/entries/entries.ts
@@ -170,7 +170,7 @@ export class AddonBlogEntriesPage implements OnInit {
                     entry.contextInstanceId = entry.userid;
                 }
 
-                entry.summary = CoreTextUtils.instance.replacePluginfileUrls(entry.summary, entry.summaryfiles || []);
+                entry.summary = CoreTextUtils.replacePluginfileUrls(entry.summary, entry.summaryfiles || []);
 
                 return CoreUser.getProfile(entry.userid, entry.courseid, true).then((user) => {
                     entry.user = user;
diff --git a/src/addons/mod/scorm/pages/player/player.ts b/src/addons/mod/scorm/pages/player/player.ts
index ad6555c82..9c4bdc9c9 100644
--- a/src/addons/mod/scorm/pages/player/player.ts
+++ b/src/addons/mod/scorm/pages/player/player.ts
@@ -118,7 +118,7 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
                 try {
                     await this.setStartTime(this.currentSco.id);
                 } catch (error) {
-                    CoreDomUtils.instance.showErrorModalDefault(error, 'addon.mod_scorm.errorgetscorm', true);
+                    CoreDomUtils.showErrorModalDefault(error, 'addon.mod_scorm.errorgetscorm', true);
                 }
             }
 
@@ -198,7 +198,7 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
                 try {
                     AddonModScormHelper.convertAttemptToOffline(this.scorm, this.attempt);
                 } catch (error) {
-                    CoreDomUtils.instance.showErrorModalDefault(error, 'core.error', true);
+                    CoreDomUtils.showErrorModalDefault(error, 'core.error', true);
                 }
 
                 this.refreshToc();
@@ -303,7 +303,7 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
             this.userData = data;
             this.accessInfo = accessInfo;
         } catch (error) {
-            CoreDomUtils.instance.showErrorModalDefault(error, 'addon.mod_scorm.errorgetscorm', true);
+            CoreDomUtils.showErrorModalDefault(error, 'addon.mod_scorm.errorgetscorm', true);
         }
     }
 
@@ -469,7 +469,7 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
 
                 await AddonModScorm.saveTracks(sco.id, this.attempt, tracks, this.scorm, true);
             } catch (error) {
-                CoreDomUtils.instance.showErrorModalDefault(error, 'core.error', true);
+                CoreDomUtils.showErrorModalDefault(error, 'core.error', true);
             }
         } finally {
             // Refresh TOC, some prerequisites might have changed.
@@ -510,7 +510,7 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
 
             await this.fetchToc();
         } catch (error) {
-            CoreDomUtils.instance.showErrorModalDefault(error, 'addon.mod_scorm.errorgetscorm', true);
+            CoreDomUtils.showErrorModalDefault(error, 'addon.mod_scorm.errorgetscorm', true);
         }
     }
 
diff --git a/src/app/app.component.ts b/src/app/app.component.ts
index 84047aeca..8d21b8dfb 100644
--- a/src/app/app.component.ts
+++ b/src/app/app.component.ts
@@ -119,7 +119,7 @@ export class AppComponent implements OnInit, AfterViewInit {
                 });
                 CoreUtils.closeInAppBrowser();
 
-            } else if (CoreApp.instance.isAndroid()) {
+            } else if (CoreApp.isAndroid()) {
                 // Check if the URL has a custom URL scheme. In Android they need to be opened manually.
                 const urlScheme = CoreUrlUtils.getUrlProtocol(url);
                 if (urlScheme && urlScheme !== 'file' && urlScheme !== 'cdvfile') {
diff --git a/src/core/features/siteplugins/classes/call-ws-directive.ts b/src/core/features/siteplugins/classes/call-ws-directive.ts
index 58f9b73ab..53caf6458 100644
--- a/src/core/features/siteplugins/classes/call-ws-directive.ts
+++ b/src/core/features/siteplugins/classes/call-ws-directive.ts
@@ -124,7 +124,7 @@ export class CoreSitePluginsCallWSBaseDirective implements OnInit, OnDestroy {
     invalidate(): Promise<void> {
         const params = this.getParamsForWS();
 
-        return CoreSitePlugins.instance.invalidateCallWS(this.name, params, this.preSets);
+        return CoreSitePlugins.invalidateCallWS(this.name, params, this.preSets);
     }
 
     /**