diff --git a/app/services/core-node.js b/app/services/core-node.js
index e531043..fa579fa 100644
--- a/app/services/core-node.js
+++ b/app/services/core-node.js
@@ -49,7 +49,7 @@ class CoreNodeService extends SiteService {
   }
 
   async attachExpressRoutes (router) {
-    const cores = await this.getConnectedCores();
+    const cores = await this.getConnectedCores(null, true);
     cores.forEach((core) => {
       const coreAuthStrategyName = this.getCoreAuthStrategyName(core);
       const coreAuthUri = `/core/${core._id}`;
@@ -64,11 +64,19 @@ class CoreNodeService extends SiteService {
       });
       router.get(
         coreAuthUri,
+        (req, res, next) => {
+          this.log.debug('Core auth request', { coreAuthStrategyName, clientId: core.oauth.clientId });
+          return next();
+        },
         passport.authenticate(coreAuthStrategyName),
       );
 
       router.get(
         coreAuthCallbackUri,
+        (req, res, next) => {
+          this.log.debug('Core auth callback');
+          return next();
+        },
         passport.authenticate(coreAuthStrategyName, { failureRedirect: '/' }),
         async (req, res) => {
           // req.login(user, (error) => {
@@ -87,20 +95,19 @@ class CoreNodeService extends SiteService {
     const { coreNode: coreNodeService } = this.dtp.services;
     const AUTH_SCHEME = coreNodeService.getCoreRequestScheme();
 
+    const coreAuthStrategyName = this.getCoreAuthStrategyName(core);
     const authorizationHost = `${core.address.host}:${core.address.port}`;
     const authorizationURL = `${AUTH_SCHEME}://${authorizationHost}/oauth2/authorize`;
     const tokenURL = `${AUTH_SCHEME}://${authorizationHost}/oauth2/token`;
     const callbackURL = `${AUTH_SCHEME}://${process.env.DTP_SITE_DOMAIN}/auth/core/callback`;
-
-    const oauthOptions = {
-      clientID: core.oauth.clientId,
-      clientSecret: core.oauth.clientSecret,
-      authorizationURL, tokenURL, callbackURL,
-    };
-
-    const coreAuthStrategyName = this.getCoreAuthStrategyName(core);
     const coreAuthStrategy = new OAuth2Strategy(
-      oauthOptions,
+      {
+        authorizationURL,
+        tokenURL,
+        clientID: core.oauth.clientId.toString(),
+        clientSecret: core.oauth.clientSecret,
+        callbackURL,
+      },
       async (accessToken, refreshToken, profile, cb) => {
         this.log.info('Core login', {
           name: core.meta.name,
@@ -118,6 +125,7 @@ class CoreNodeService extends SiteService {
       name: coreAuthStrategyName,
       host: core.address.host,
       port: core.address.port,
+      clientID: core.oauth.clientId.toString(),
     });
     passport.use(coreAuthStrategyName, coreAuthStrategy);
   }
diff --git a/app/services/oauth2.js b/app/services/oauth2.js
index 36e77e2..c17306d 100644
--- a/app/services/oauth2.js
+++ b/app/services/oauth2.js
@@ -95,9 +95,14 @@ class OAuth2Service extends SiteService {
     try {
       const client = await OAuth2Client.findOne({ clientID });
       if (!client) {
+        this.log.alert('OAuth2 client not found', { clientID });
         return done(null, false);
       }
       if (client.redirectUri !== redirectUri) {
+        this.log.alert('OAuth2 client redirect URI mismatch', {
+          redirectUri,
+          officialUri: client.redirectUri,
+        });
         return done(null, false);
       }
       return done(null, client, client.redirectUri);
diff --git a/app/views/welcome/core-home.pug b/app/views/welcome/core-home.pug
index d29a249..aeb2a1f 100644
--- a/app/views/welcome/core-home.pug
+++ b/app/views/welcome/core-home.pug
@@ -3,20 +3,19 @@ block content
 
   section.uk-section.uk-section-default
     .uk-container
-      h1.uk-text-center Select Core
-      p.uk-text-center #{site.name} is connected with the following Core Communities.
+      .uk-margin-large
+        h1.uk-text-center Select Community
+        p.uk-text-center #{site.name} is connected with the following Core Communities.
 
-  section.uk-section.uk-section-secondary
-    .uk-container
       div(uk-grid).uk-flex-center
         each core in connectedCores
           div(class="uk-width-1-1 uk-width-1-2@m uk-width-1-3@l")
             //- pre= JSON.stringify(connectedCores, null, 2)
             a(href=`/auth/core/${core._id}`).uk-display-block.uk-link-text
-              .uk-tile.uk-tile-secondary.uk-padding-small
-                div(uk-grid).uk-grid
+              .uk-tile.uk-tile-default.uk-padding-small.uk-border-small
+                div(uk-grid).uk-grid-small.uk-flex-middle
                   .uk-width-auto
-                    img(src=`http://${core.meta.domain}/img/icon/dtp-core.svg`, style="width: 32px; height: auto;")
+                    img(src=`http://${core.meta.domain}/img/icon/dtp-core.svg`, style="width: 48px; height: auto;")
                   .uk-width-expand
                     h4.uk-margin-remove= core.meta.name
                     .uk-text-small.uk-text-muted= core.meta.description
\ No newline at end of file