diff --git a/app/src/main/java/fr/gouv/etalab/mastodon/activities/LoginActivity.java b/app/src/main/java/fr/gouv/etalab/mastodon/activities/LoginActivity.java
index 6ea6148d0..ae4432efb 100644
--- a/app/src/main/java/fr/gouv/etalab/mastodon/activities/LoginActivity.java
+++ b/app/src/main/java/fr/gouv/etalab/mastodon/activities/LoginActivity.java
@@ -15,6 +15,7 @@
 package fr.gouv.etalab.mastodon.activities;
 
 import android.content.Context;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.graphics.Paint;
@@ -22,8 +23,13 @@ import android.os.AsyncTask;
 import android.os.Bundle;
 import android.support.design.widget.TextInputLayout;
 import android.support.v4.content.ContextCompat;
+import android.support.v7.app.AlertDialog;
 import android.text.Editable;
+import android.text.SpannableString;
 import android.text.TextWatcher;
+import android.text.method.LinkMovementMethod;
+import android.text.style.UnderlineSpan;
+import android.text.util.Linkify;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
@@ -49,6 +55,7 @@ import fr.gouv.etalab.mastodon.client.HttpsConnection;
 import fr.gouv.etalab.mastodon.helper.Helper;
 
 import static fr.gouv.etalab.mastodon.helper.Helper.changeDrawableColor;
+import static fr.gouv.etalab.mastodon.helper.Helper.convertDpToPixel;
 
 
 /**
@@ -186,6 +193,33 @@ public class LoginActivity extends BaseActivity {
                 }
             }
         });
+
+
+        final TextView login_issue = findViewById(R.id.login_issue);
+        SpannableString content = new SpannableString(getString(R.string.issue_login_title));
+        content.setSpan(new UnderlineSpan(), 0, content.length(), 0);
+        login_issue.setText(content);
+        login_issue.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                AlertDialog.Builder builder = new AlertDialog.Builder(LoginActivity.this);
+                builder.setTitle(R.string.issue_login_title);
+                TextView message = new TextView(LoginActivity.this);
+                final SpannableString s =
+                        new SpannableString(getText(R.string.issue_login_message));
+                Linkify.addLinks(s, Linkify.WEB_URLS);
+                message.setText(s);
+                message.setPadding((int) convertDpToPixel(10,LoginActivity.this), (int) convertDpToPixel(10,LoginActivity.this), (int) convertDpToPixel(10,LoginActivity.this), (int) convertDpToPixel(10,LoginActivity.this));
+                message.setMovementMethod(LinkMovementMethod.getInstance());
+                builder.setView(message);
+                builder.setPositiveButton(R.string.close, new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int which) {
+                        dialog.dismiss();
+                    }
+                });
+                builder.setIcon(android.R.drawable.ic_dialog_alert).show();
+            }
+        });
     }
 
 
diff --git a/app/src/main/res/layout-sw600dp/activity_login.xml b/app/src/main/res/layout-sw600dp/activity_login.xml
index c2f724438..fc610c31e 100644
--- a/app/src/main/res/layout-sw600dp/activity_login.xml
+++ b/app/src/main/res/layout-sw600dp/activity_login.xml
@@ -72,6 +72,13 @@
                 android:layout_width="300dp"
                 android:layout_height="wrap_content"
                 />
+
+            <TextView
+                android:layout_gravity="center"
+                android:layout_marginTop="10dp"
+                android:id="@+id/login_issue"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content" />
             <Button
                 android:id="@+id/login_button"
                 android:textAllCaps="false"
diff --git a/app/src/main/res/layout/activity_login.xml b/app/src/main/res/layout/activity_login.xml
index 0dbf3a420..96159f14b 100644
--- a/app/src/main/res/layout/activity_login.xml
+++ b/app/src/main/res/layout/activity_login.xml
@@ -72,6 +72,13 @@
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 />
+
+            <TextView
+                android:layout_gravity="center"
+                android:layout_marginTop="10dp"
+                android:id="@+id/login_issue"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content" />
             <Button
                 android:id="@+id/login_button"
                 android:textAllCaps="false"
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 09e64b71a..956267464 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -468,4 +468,15 @@
     <string name="account_moved_to">%1$s has moved to %2$s</string>
 
     <string name="show_boost_count">Show boosts/favourites count</string>
+
+    <string name="issue_login_title">Authentication does not work?</string>
+    <string name="issue_login_message">
+        <b>Here are some checks that might help:</b>\n\n
+        - Check there is no spelling mistakes in the instance name\n\n
+        - Check that your instance is not down\n\n
+        - If you use the two-factor authentication (2FA), please use the link at the bottom (once the instance name is filled)\n\n
+        - You can also use this link without using the 2FA\n\n
+        - If it still does not work, please raise an issue on Github at https://github.com/stom79/mastalab/issues
+    </string>
+
 </resources>
\ No newline at end of file