diff --git a/config.xml b/config.xml
index b2055031e..57488f7ba 100644
--- a/config.xml
+++ b/config.xml
@@ -37,6 +37,7 @@
     <preference name="SplashMaintainAspectRatio" value="true" />
     <preference name="SplashShowOnlyFirstTime" value="false" />
     <preference name="LoadUrlTimeoutValue" value="60000" />
+    <preference name="CustomURLSchemePluginClearsAndroidIntent" value="true" />
     <feature name="StatusBar">
         <param name="ios-package" onload="true" value="CDVStatusBar" />
     </feature>
diff --git a/src/addon/mod/book/components/index/index.ts b/src/addon/mod/book/components/index/index.ts
index 1dd820508..1b154d373 100644
--- a/src/addon/mod/book/components/index/index.ts
+++ b/src/addon/mod/book/components/index/index.ts
@@ -186,7 +186,7 @@ export class AddonModBookIndexComponent extends CoreCourseModuleMainResourceComp
             // Chapter loaded, log view. We don't return the promise because we don't want to block the user for this.
             this.bookProvider.logView(this.module.instance, chapterId, this.module.name).then(() => {
                 // Module is completed when last chapter is viewed, so we only check completion if the last is reached.
-                if (!this.nextChapter) {
+                if (this.nextChapter == '0') {
                     this.courseProvider.checkModuleCompletion(this.courseId, this.module.completiondata);
                 }
             }).catch(() => {
diff --git a/src/classes/site.ts b/src/classes/site.ts
index afafeada4..9253f83e6 100644
--- a/src/classes/site.ts
+++ b/src/classes/site.ts
@@ -680,6 +680,8 @@ export class CoreSite {
                     (error.errorcode == 'accessexception' && error.message.indexOf('Invalid token - token expired') > -1)) {
                     if (initialToken !== this.token && !retrying) {
                         // Token has changed, retry with the new token.
+                        preSets.getFromCache = false; // Don't check cache now. Also, it will skip ongoingRequests.
+
                         return this.request(method, data, preSets, true);
                     } else if (this.appProvider.isSSOAuthenticationOngoing()) {
                         // There's an SSO authentication ongoing, wait for it to finish and try again.
diff --git a/src/providers/sites.ts b/src/providers/sites.ts
index de7424c1b..19f117a6a 100644
--- a/src/providers/sites.ts
+++ b/src/providers/sites.ts
@@ -582,22 +582,48 @@ export class CoreSitesProvider {
         }
 
         // Create a "candidate" site to fetch the site info.
-        const candidateSite = this.sitesFactory.makeSite(undefined, siteUrl, token, undefined, privateToken);
+        let candidateSite = this.sitesFactory.makeSite(undefined, siteUrl, token, undefined, privateToken),
+            isNewSite = true;
 
         return candidateSite.fetchSiteInfo().then((info) => {
             const result = this.isValidMoodleVersion(info);
             if (result == this.VALID_VERSION) {
-                // Set site ID and info.
                 const siteId = this.createSiteID(info.siteurl, info.username);
-                candidateSite.setId(siteId);
-                candidateSite.setInfo(info);
 
-                // Create database tables before login and before any WS call.
-                return this.migrateSiteSchemas(candidateSite).then(() => {
+                // Check if the site already exists.
+                return this.getSite(siteId).catch(() => {
+                    // Not exists.
+                }).then((site) => {
+                    if (site) {
+                        // Site already exists, update its data and use it.
+                        isNewSite = false;
+                        candidateSite = site;
+                        candidateSite.setToken(token);
+                        candidateSite.setPrivateToken(privateToken);
+                        candidateSite.setInfo(info);
+
+                    } else {
+                        // New site, set site ID and info.
+                        isNewSite = true;
+                        candidateSite.setId(siteId);
+                        candidateSite.setInfo(info);
+
+                        // Create database tables before login and before any WS call.
+                        return this.migrateSiteSchemas(candidateSite);
+                    }
+
+                }).then(() => {
 
                     // Try to get the site config.
-                    return this.getSiteConfig(candidateSite).then((config) => {
-                        candidateSite.setConfig(config);
+                    return this.getSiteConfig(candidateSite).catch((error) => {
+                        // Ignore errors if it's not a new site, we'll use the config already stored.
+                        if (isNewSite) {
+                            return Promise.reject(error);
+                        }
+                    }).then((config) => {
+                        if (typeof config != 'undefined') {
+                            candidateSite.setConfig(config);
+                        }
 
                         // Add site to sites list.
                         this.addSite(siteId, siteUrl, token, info, privateToken, config);